{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-33479", "tracking": { "current_release_date": "2026-03-26T00:45:06.442196Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33479", "initial_release_date": "2026-03-20T21:41:07.916327Z", "revision_history": [ { "date": "2026-03-20T21:41:07.916327Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-20T21:41:11.431881Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-23T18:11:03.541550Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-23T18:11:07.117801Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-23T22:27:43.299472Z", "number": "5", "summary": "Unknown change." }, { "date": "2026-03-23T22:51:05.973441Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-23T22:51:15.366469Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-24T20:54:18.866451Z", "number": "8", "summary": "Products connected (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-03-24T20:54:46.256820Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-24T21:37:27.016738Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-24T21:37:30.288057Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-25T20:11:40.278967Z", "number": "12", "summary": "References created (2)." }, { "date": "2026-03-25T20:11:41.594680Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-26T00:44:58.752011Z", "number": "14", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (18).| Product Identifiers created (17).| References created (3).| CWES updated (1)." } ], "status": "interim", "version": "14" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<=26.0", "product": { "name": "vers:unknown/<=26.0", "product_id": "CSAFPID-5893889", "product_identification_helper": { "cpe": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "AVideo" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.4", "product": { "name": "vers:unknown/10.4", "product_id": "CSAFPID-5656122", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@10.4" } } }, { "category": "product_version_range", "name": "vers:unknown/10.8", "product": { "name": "vers:unknown/10.8", "product_id": "CSAFPID-5656123", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@10.8" } } }, { "category": "product_version_range", "name": "vers:unknown/11", "product": { "name": "vers:unknown/11", "product_id": "CSAFPID-5656124", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@11" } } }, { "category": "product_version_range", "name": "vers:unknown/11.1", "product": { "name": "vers:unknown/11.1", "product_id": "CSAFPID-5656125", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@11.1" } } }, { "category": "product_version_range", "name": "vers:unknown/11.1.1", "product": { "name": "vers:unknown/11.1.1", "product_id": "CSAFPID-5656126", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@11.1.1" } } }, { "category": "product_version_range", "name": "vers:unknown/11.5", "product": { "name": "vers:unknown/11.5", "product_id": "CSAFPID-5656127", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@11.5" } } }, { "category": "product_version_range", "name": "vers:unknown/11.6", "product": { "name": "vers:unknown/11.6", "product_id": "CSAFPID-5656128", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@11.6" } } }, { "category": "product_version_range", "name": "vers:unknown/12.4", "product": { "name": "vers:unknown/12.4", "product_id": "CSAFPID-5656129", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@12.4" } } }, { "category": "product_version_range", "name": "vers:unknown/14.3", "product": { "name": "vers:unknown/14.3", "product_id": "CSAFPID-5656130", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@14.3" } } }, { "category": "product_version_range", "name": "vers:unknown/14.3.1", "product": { "name": "vers:unknown/14.3.1", "product_id": "CSAFPID-5656131", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@14.3.1" } } }, { "category": "product_version_range", "name": "vers:unknown/14.4", "product": { "name": "vers:unknown/14.4", "product_id": "CSAFPID-5656132", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@14.4" } } }, { "category": "product_version_range", "name": "vers:unknown/18.0", "product": { "name": "vers:unknown/18.0", "product_id": "CSAFPID-5656133", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@18.0" } } }, { "category": "product_version_range", "name": "vers:unknown/21.0", "product": { "name": "vers:unknown/21.0", "product_id": "CSAFPID-5721197", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@21.0" } } }, { "category": "product_version_range", "name": "vers:unknown/22.0", "product": { "name": "vers:unknown/22.0", "product_id": "CSAFPID-5772271", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@22.0" } } }, { "category": "product_version_range", "name": "vers:unknown/24.0", "product": { "name": "vers:unknown/24.0", "product_id": "CSAFPID-5772272", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@24.0" } } }, { "category": "product_version_range", "name": "vers:unknown/25.0", "product": { "name": "vers:unknown/25.0", "product_id": "CSAFPID-5840723", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@25.0" } } }, { "category": "product_version_range", "name": "vers:unknown/26.0", "product": { "name": "vers:unknown/26.0", "product_id": "CSAFPID-5878928", "product_identification_helper": { "purl": "pkg:composer/wwbn/avideo@26.0" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<=26.0", "product": { "name": "vers:unknown/>=0|<=26.0", "product_id": "CSAFPID-5878929" } } ], "category": "product_name", "name": "avideo" } ], "category": "vendor", "name": "WWBN" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33479", "cwe": { "id": "CWE-94", "name": "Improper Control of Generation of Code ('Code Injection')" }, "notes": [ { "category": "description", "text": "## Summary\n\nThe Gallery plugin's `saveSort.json.php` endpoint passes unsanitized user input from `$_REQUEST['sections']` array values directly into PHP's `eval()` function. While the endpoint is gated behind `User::isAdmin()`, it has no CSRF token validation. Combined with AVideo's explicit `SameSite=None` session cookie configuration, an attacker can exploit this via cross-site request forgery to achieve unauthenticated remote code execution — requiring only that an admin visits an attacker-controlled page.\n\n## Details\n\n**Vulnerable code** — `plugin/Gallery/view/saveSort.json.php:20-25`:\n\n```php\nif(!empty($_REQUEST['sections'])){\n $object = $gallery->getDataObject();\n foreach ($_REQUEST['sections'] as $key => $value) {\n $obj->sectionsSaved[] = array($key=>$value);\n eval(\"\\$object->{$value}Order = \\$key;\");\n }\n $obj->error = !$gallery->setDataObject($object);\n}\n```\n\nThe `$value` variable from `$_REQUEST['sections']` is interpolated directly into the string passed to `eval()` with no sanitization — no allowlist, no regex validation, no escaping. Normal Gallery usage sends section names like `'Shorts'`, `'Trending'`, etc. from jQuery UI sortable, but the server enforces no such constraint.\n\n**CSRF enablement** — `objects/include_config.php:134-137`:\n\n```php\nif ($isHTTPS) {\n ini_set('session.cookie_samesite', 'None');\n ini_set('session.cookie_secure', '1');\n}\n```\n\nThe session cookie is explicitly set to `SameSite=None`, which instructs browsers to send the cookie on cross-site requests. This is also reinforced in `objects/functionsPHP.php:330-333` where additional cookies are set with `SameSite=None; Secure`.\n\n**No CSRF protection** — The endpoint performs no CSRF token validation, no Origin header check, no Referer header check, and no `X-Requested-With` header check. There is no global CSRF middleware in AVideo's bootstrap chain.\n\n**Exploit chain:**\n1. Attacker crafts a page with an auto-submitting form targeting `saveSort.json.php`\n2. Admin visits the attacker's page (e.g., via a link in a comment, email, or message)\n3. The browser sends the cross-site POST request **with the admin's session cookie** attached (due to `SameSite=None`)\n4. `User::isAdmin()` passes because the admin's session is present\n5. The injected PHP code in the `sections` array value is passed to `eval()` and executes\n\n## PoC\n\n**Step 1:** Host the following HTML on an attacker-controlled server:\n\n```html\n\n\n\n
\n \n
\n\n\n\n```\n\nThe base64 decodes to `id;hostname`.\n\n**Step 2:** Lure an authenticated AVideo admin to visit the page.\n\n**Step 3:** The eval on line 24 executes:\n```php\n$object->x=1;system(base64_decode('aWQ7aG9zdG5hbWU='));//Order = 0;\n```\n\nThis breaks out of the property assignment, calls `system()` with attacker-controlled arguments, and comments out the rest of the line. The response JSON will contain the command output, but even without seeing the response, the command executes server-side.\n\n**Expected result:** The `id` and `hostname` commands execute on the server under the web server's user context.\n\n## Impact\n\n- **Remote Code Execution** — An attacker achieves arbitrary PHP code execution on the server by luring an admin to visit a malicious page. No prior authentication or account on the target is required.\n- **Full server compromise** — The attacker can read/write files, access the database, pivot to other services, install backdoors, or exfiltrate data.\n- **Stealth** — The attack is a single form submission that completes in milliseconds. The admin may not notice anything unusual.\n- **Blast radius** — Any AVideo instance running over HTTPS (which triggers `SameSite=None`) where an admin can be lured to click a link is vulnerable.\n\n## Recommended Fix\n\n**Primary fix — Replace `eval()` with an allowlist check:**\n\nIn `plugin/Gallery/view/saveSort.json.php`, replace lines 20-26:\n\n```php\nif(!empty($_REQUEST['sections'])){\n $object = $gallery->getDataObject();\n $allowedSections = ['Shorts', 'Trending', 'SiteSuggestion', 'Newest', \n 'Subscribe', 'Popular', 'LiveStream', 'Category', \n 'Program', 'Channel'];\n foreach ($_REQUEST['sections'] as $key => $value) {\n if (!in_array($value, $allowedSections, true)) {\n continue;\n }\n $obj->sectionsSaved[] = array($key => $value);\n $property = $value . 'Order';\n $object->$property = intval($key);\n }\n $obj->error = !$gallery->setDataObject($object);\n}\n```\n\nThis eliminates `eval()` entirely, validates `$value` against a known allowlist of section names, and uses dynamic property access (`$object->$property`) instead of code generation.\n\n**Secondary fix — Add CSRF protection** to all state-changing endpoints, or at minimum set `SameSite=Lax` on session cookies instead of `SameSite=None` in `objects/include_config.php:135`:\n\n```php\nini_set('session.cookie_samesite', 'Lax');\n```\n\nThis prevents session cookies from being sent on cross-site form submissions, blocking the CSRF vector for all endpoints.", "title": "github - https://api.github.com/advisories/GHSA-xggw-g9pm-9qhh" }, { "category": "description", "text": "WWBN AVideo is an open source video platform. In versions up to and including 26.0, the Gallery plugin's `saveSort.json.php` endpoint passes unsanitized user input from `$_REQUEST['sections']` array values directly into PHP's `eval()` function. While the endpoint is gated behind `User::isAdmin()`, it has no CSRF token validation. Combined with AVideo's explicit `SameSite=None` session cookie configuration, an attacker can exploit this via cross-site request forgery to achieve unauthenticated remote code execution — requiring only that an admin visits an attacker-controlled page. Commit 087dab8841f8bdb54be184105ef19b47c5698fcb contains a patch.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33479.json" }, { "category": "description", "text": "WWBN AVideo is an open source video platform. In versions up to and including 26.0, the Gallery plugin's `saveSort.json.php` endpoint passes unsanitized user input from `$_REQUEST['sections']` array values directly into PHP's `eval()` function. While the endpoint is gated behind `User::isAdmin()`, it has no CSRF token validation. Combined with AVideo's explicit `SameSite=None` session cookie configuration, an attacker can exploit this via cross-site request forgery to achieve unauthenticated remote code execution — requiring only that an admin visits an attacker-controlled page. Commit 087dab8841f8bdb54be184105ef19b47c5698fcb contains a patch.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33479" }, { "category": "description", "text": "## Summary\n\nThe Gallery plugin's `saveSort.json.php` endpoint passes unsanitized user input from `$_REQUEST['sections']` array values directly into PHP's `eval()` function. While the endpoint is gated behind `User::isAdmin()`, it has no CSRF token validation. Combined with AVideo's explicit `SameSite=None` session cookie configuration, an attacker can exploit this via cross-site request forgery to achieve unauthenticated remote code execution — requiring only that an admin visits an attacker-controlled page.\n\n## Details\n\n**Vulnerable code** — `plugin/Gallery/view/saveSort.json.php:20-25`:\n\n```php\nif(!empty($_REQUEST['sections'])){\n $object = $gallery->getDataObject();\n foreach ($_REQUEST['sections'] as $key => $value) {\n $obj->sectionsSaved[] = array($key=>$value);\n eval(\"\\$object->{$value}Order = \\$key;\");\n }\n $obj->error = !$gallery->setDataObject($object);\n}\n```\n\nThe `$value` variable from `$_REQUEST['sections']` is interpolated directly into the string passed to `eval()` with no sanitization — no allowlist, no regex validation, no escaping. Normal Gallery usage sends section names like `'Shorts'`, `'Trending'`, etc. from jQuery UI sortable, but the server enforces no such constraint.\n\n**CSRF enablement** — `objects/include_config.php:134-137`:\n\n```php\nif ($isHTTPS) {\n ini_set('session.cookie_samesite', 'None');\n ini_set('session.cookie_secure', '1');\n}\n```\n\nThe session cookie is explicitly set to `SameSite=None`, which instructs browsers to send the cookie on cross-site requests. This is also reinforced in `objects/functionsPHP.php:330-333` where additional cookies are set with `SameSite=None; Secure`.\n\n**No CSRF protection** — The endpoint performs no CSRF token validation, no Origin header check, no Referer header check, and no `X-Requested-With` header check. There is no global CSRF middleware in AVideo's bootstrap chain.\n\n**Exploit chain:**\n1. Attacker crafts a page with an auto-submitting form targeting `saveSort.json.php`\n2. Admin visits the attacker's page (e.g., via a link in a comment, email, or message)\n3. The browser sends the cross-site POST request **with the admin's session cookie** attached (due to `SameSite=None`)\n4. `User::isAdmin()` passes because the admin's session is present\n5. The injected PHP code in the `sections` array value is passed to `eval()` and executes\n\n## PoC\n\n**Step 1:** Host the following HTML on an attacker-controlled server:\n\n```html\n\n\n\n
\n \n
\n\n\n\n```\n\nThe base64 decodes to `id;hostname`.\n\n**Step 2:** Lure an authenticated AVideo admin to visit the page.\n\n**Step 3:** The eval on line 24 executes:\n```php\n$object->x=1;system(base64_decode('aWQ7aG9zdG5hbWU='));//Order = 0;\n```\n\nThis breaks out of the property assignment, calls `system()` with attacker-controlled arguments, and comments out the rest of the line. The response JSON will contain the command output, but even without seeing the response, the command executes server-side.\n\n**Expected result:** The `id` and `hostname` commands execute on the server under the web server's user context.\n\n## Impact\n\n- **Remote Code Execution** — An attacker achieves arbitrary PHP code execution on the server by luring an admin to visit a malicious page. No prior authentication or account on the target is required.\n- **Full server compromise** — The attacker can read/write files, access the database, pivot to other services, install backdoors, or exfiltrate data.\n- **Stealth** — The attack is a single form submission that completes in milliseconds. The admin may not notice anything unusual.\n- **Blast radius** — Any AVideo instance running over HTTPS (which triggers `SameSite=None`) where an admin can be lured to click a link is vulnerable.\n\n## Recommended Fix\n\n**Primary fix — Replace `eval()` with an allowlist check:**\n\nIn `plugin/Gallery/view/saveSort.json.php`, replace lines 20-26:\n\n```php\nif(!empty($_REQUEST['sections'])){\n $object = $gallery->getDataObject();\n $allowedSections = ['Shorts', 'Trending', 'SiteSuggestion', 'Newest', \n 'Subscribe', 'Popular', 'LiveStream', 'Category', \n 'Program', 'Channel'];\n foreach ($_REQUEST['sections'] as $key => $value) {\n if (!in_array($value, $allowedSections, true)) {\n continue;\n }\n $obj->sectionsSaved[] = array($key => $value);\n $property = $value . 'Order';\n $object->$property = intval($key);\n }\n $obj->error = !$gallery->setDataObject($object);\n}\n```\n\nThis eliminates `eval()` entirely, validates `$value` against a known allowlist of section names, and uses dynamic property access (`$object->$property`) instead of code generation.\n\n**Secondary fix — Add CSRF protection** to all state-changing endpoints, or at minimum set `SameSite=Lax` on session cookies instead of `SameSite=None` in `objects/include_config.php:135`:\n\n```php\nini_set('session.cookie_samesite', 'Lax');\n```\n\nThis prevents session cookies from being sent on cross-site form submissions, blocking the CSRF vector for all endpoints.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Packagist%2FGHSA-xggw-g9pm-9qhh.json?alt=media" }, { "category": "other", "text": "0.00153", "title": "EPSS" }, { "category": "other", "text": "3.6", "title": "NCSC Score" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, The value of the most recent EPSS score, There is exploit data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5893889", "CSAFPID-5656122", "CSAFPID-5656123", "CSAFPID-5656124", "CSAFPID-5656125", "CSAFPID-5656126", "CSAFPID-5656127", "CSAFPID-5656128", "CSAFPID-5656129", "CSAFPID-5656130", "CSAFPID-5656131", "CSAFPID-5656132", "CSAFPID-5656133", "CSAFPID-5721197", "CSAFPID-5772271", "CSAFPID-5772272", "CSAFPID-5840723", "CSAFPID-5878928", "CSAFPID-5878929" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-xggw-g9pm-9qhh" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33479.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33479" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Packagist%2FGHSA-xggw-g9pm-9qhh.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-xggw-g9pm-9qhh" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-xggw-g9pm-9qhh" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/WWBN/AVideo/commit/087dab8841f8bdb54be184105ef19b47c5698fcb" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33479" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-5656122", "CSAFPID-5656123", "CSAFPID-5656124", "CSAFPID-5656125", "CSAFPID-5656126", "CSAFPID-5656127", "CSAFPID-5656128", "CSAFPID-5656129", "CSAFPID-5656130", "CSAFPID-5656131", "CSAFPID-5656132", "CSAFPID-5656133", "CSAFPID-5721197", "CSAFPID-5772271", "CSAFPID-5772272", "CSAFPID-5840723", "CSAFPID-5878928", "CSAFPID-5878929", "CSAFPID-5893889" ] } ], "title": "CVE-2026-33479" } ] }