{ "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-2026-33296", "tracking": { "current_release_date": "2026-03-29T16:14:22.700971Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33296", "initial_release_date": "2026-03-20T15:28:51.095778Z", "revision_history": [ { "date": "2026-03-20T15:28:51.095778Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-20T15:28:57.672959Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-22T17:24:57.817393Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-22T17:25:08.828255Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-22T17:39:06.121073Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-22T17:39:17.247175Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-23T18:11:37.461092Z", "number": "7", "summary": "Unknown change." }, { "date": "2026-03-23T18:11:42.810834Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-24T20:52:44.906795Z", "number": "9", "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-03-24T20:52:48.322006Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-24T21:37:40.994574Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-25T18:41:57.289430Z", "number": "12", "summary": "References created (2)." }, { "date": "2026-03-25T18:42:08.945273Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-26T00:39:32.715023Z", "number": "14", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (17).| Product Identifiers created (16).| References created (3).| CWES updated (1)." }, { "date": "2026-03-26T00:39:42.341321Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-03-29T03:16:15.322279Z", "number": "16", "summary": "References removed (2)." }, { "date": "2026-03-29T03:16:18.324022Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-03-29T16:14:21.507017Z", "number": "18", "summary": "References created (2)." } ], "status": "interim", "version": "18" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<26.0", "product": { "name": "vers:unknown/<26.0", "product_id": "CSAFPID-5874460", "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/>=0|<=25.0", "product": { "name": "vers:unknown/>=0|<=25.0", "product_id": "CSAFPID-5840724" } } ], "category": "product_name", "name": "avideo" } ], "category": "vendor", "name": "WWBN" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33296", "cwe": { "id": "CWE-601", "name": "URL Redirection to Untrusted Site ('Open Redirect')" }, "notes": [ { "category": "description", "text": "### Summary\n\nWWBN/AVideo contains an open redirect vulnerability in the login flow where a user-supplied redirectUri parameter is reflected directly into a JavaScript `document.location` assignment without JavaScript-safe encoding. After a user completes the login popup flow, a timer callback executes the redirect using the unvalidated value, sending the victim to an attacker-controlled site.\n\n### Details\n\nIn `view/userLogin.php`, the application accepts a redirectUri GET parameter, passes it through a function called `isSafeRedirectURL()`, and stores the result in $safeRedirectUri. This value is then embedded into an inline JavaScript block:\n\n```php\nvar logintimer = setInterval(function() {\n if (win.closed) {\n clearInterval(logintimer);\n document.location = \"\";\n }\n}, 1000);\n```\n\nThe value is printed directly into a JavaScript string literal with no call to `json_encode()`, `htmlspecialchars()`, or any JavaScript-context escaping. Even if `isSafeRedirectURL()` is intended to filter dangerous values, protocol-relative URLs such as `//evil.com` satisfy many naive URL validation checks because they carry no explicit scheme, yet browsers will resolve them as `https://evil.com` when embedded in a navigation target. Additional bypass vectors include subdomain confusion of the form `https://trusted.com.evil.com` and path-prefix matching weaknesses. Because the reflected value lands inside a JavaScript string rather than an HTML attribute, HTML-level encoding would not prevent exploitation either. Once the popup window is closed, the setInterval callback fires every second, and the first time `win.closed` is truthy the victim's main page is redirected to the attacker's URL.\n\n### PoC\n\n```\nhttps://victim.com/view/userLogin.php?redirectUri=//evil.com\n```\n\n```python\nimport requests\n\nbase = \"https://victim.com/view/userLogin.php\"\npayload = \"//evil.com\"\nr = requests.get(base, params={\"redirectUri\": payload})\nassert payload in r.text, \"Payload not reflected\"\nprint(\"Reflected payload found in response\")\n```\n\n### Impact\n\nAn unauthenticated attacker can craft a login URL and distribute it to victims. After the victim interacts with the login popup and closes it, the main page is silently navigated to an attacker-controlled domain. This enables phishing attacks where the victim is presented with a credential-harvesting page that visually mimics the original site. All users of any AVideo installation are potentially affected because no authentication is required to trigger the redirect. The attack requires only that the victim follow the crafted link and complete or dismiss the popup, making it practical in targeted phishing campaigns.", "title": "github - https://api.github.com/advisories/GHSA-hj5h-5623-gwhw" }, { "category": "description", "text": "WWBN AVideo is an open source video platform. Prior to version 26.0, WWBN/AVideo contains an open redirect vulnerability in the login flow where a user-supplied redirectUri parameter is reflected directly into a JavaScript `document.location` assignment without JavaScript-safe encoding. After a user completes the login popup flow, a timer callback executes the redirect using the unvalidated value, sending the victim to an attacker-controlled site. Version 26.0 fixes the issue.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33296" }, { "category": "description", "text": "WWBN AVideo is an open source video platform. Prior to version 26.0, WWBN/AVideo contains an open redirect vulnerability in the login flow where a user-supplied redirectUri parameter is reflected directly into a JavaScript `document.location` assignment without JavaScript-safe encoding. After a user completes the login popup flow, a timer callback executes the redirect using the unvalidated value, sending the victim to an attacker-controlled site. Version 26.0 fixes the issue.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33296.json" }, { "category": "description", "text": "### Summary\n\nWWBN/AVideo contains an open redirect vulnerability in the login flow where a user-supplied redirectUri parameter is reflected directly into a JavaScript `document.location` assignment without JavaScript-safe encoding. After a user completes the login popup flow, a timer callback executes the redirect using the unvalidated value, sending the victim to an attacker-controlled site.\n\n### Details\n\nIn `view/userLogin.php`, the application accepts a redirectUri GET parameter, passes it through a function called `isSafeRedirectURL()`, and stores the result in $safeRedirectUri. This value is then embedded into an inline JavaScript block:\n\n```php\nvar logintimer = setInterval(function() {\n if (win.closed) {\n clearInterval(logintimer);\n document.location = \"\";\n }\n}, 1000);\n```\n\nThe value is printed directly into a JavaScript string literal with no call to `json_encode()`, `htmlspecialchars()`, or any JavaScript-context escaping. Even if `isSafeRedirectURL()` is intended to filter dangerous values, protocol-relative URLs such as `//evil.com` satisfy many naive URL validation checks because they carry no explicit scheme, yet browsers will resolve them as `https://evil.com` when embedded in a navigation target. Additional bypass vectors include subdomain confusion of the form `https://trusted.com.evil.com` and path-prefix matching weaknesses. Because the reflected value lands inside a JavaScript string rather than an HTML attribute, HTML-level encoding would not prevent exploitation either. Once the popup window is closed, the setInterval callback fires every second, and the first time `win.closed` is truthy the victim's main page is redirected to the attacker's URL.\n\n### PoC\n\n```\nhttps://victim.com/view/userLogin.php?redirectUri=//evil.com\n```\n\n```python\nimport requests\n\nbase = \"https://victim.com/view/userLogin.php\"\npayload = \"//evil.com\"\nr = requests.get(base, params={\"redirectUri\": payload})\nassert payload in r.text, \"Payload not reflected\"\nprint(\"Reflected payload found in response\")\n```\n\n### Impact\n\nAn unauthenticated attacker can craft a login URL and distribute it to victims. After the victim interacts with the login popup and closes it, the main page is silently navigated to an attacker-controlled domain. This enables phishing attacks where the victim is presented with a credential-harvesting page that visually mimics the original site. All users of any AVideo installation are potentially affected because no authentication is required to trigger the redirect. The attack requires only that the victim follow the crafted link and complete or dismiss the popup, making it practical in targeted phishing campaigns.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Packagist%2FGHSA-hj5h-5623-gwhw.json?alt=media" }, { "category": "other", "text": "0.00041", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N", "title": "CVSSV4" }, { "category": "other", "text": "2.1", "title": "CVSSV4 base score" }, { "category": "other", "text": "3.7", "title": "NCSC Score" }, { "category": "other", "text": "There is exploit data available from source Nvd, The value of the most recent CVSS (V3) score, Is related to (a version of) an uncommon product", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5874460", "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-5840724" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-hj5h-5623-gwhw" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33296" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33296.json" }, { "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-hj5h-5623-gwhw.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-hj5h-5623-gwhw" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-hj5h-5623-gwhw" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/WWBN/AVideo/commit/68d0fbb19e382fe62e6cc7bd48b51ffa1d9e310e" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33296" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM" }, "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-5840724", "CSAFPID-5874460" ] } ], "title": "CVE-2026-33296" } ] }