{ "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-2026-33295", "tracking": { "current_release_date": "2026-03-29T16:14:55.799044Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33295", "initial_release_date": "2026-03-20T15:28:51.373589Z", "revision_history": [ { "date": "2026-03-20T15:28:51.373589Z", "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": "2026-03-22T17:24:57.385620Z", "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": "2026-03-22T17:39:05.434218Z", "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": "2026-03-23T07:35:52.574609Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-24T20:41:58.797377Z", "number": "8", "summary": "Unknown change." }, { "date": "2026-03-24T20:42:13.339396Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-24T20:52:49.603325Z", "number": "10", "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-03-24T20:52:51.285873Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-24T21:37:41.171353Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-25T18:41:57.527170Z", "number": "13", "summary": "References created (2)." }, { "date": "2026-03-26T00:38:54.169595Z", "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": "2026-03-26T00:38:57.817389Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-03-29T03:16:15.516752Z", "number": "16", "summary": "References removed (2)." }, { "date": "2026-03-29T03:16:18.324022Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-03-29T16:14:21.806571Z", "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-2026-33295", "cwe": { "id": "CWE-79", "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')" }, "notes": [ { "category": "description", "text": "### Summary\n\nWWBN/AVideo contains a stored cross-site scripting vulnerability in the CDN plugin's download buttons component. The `clean_title` field of a video record is interpolated directly into a JavaScript string literal without any escaping, allowing an attacker who can create or modify a video to inject arbitrary JavaScript that executes in the browser of any user who visits the affected download page.\n\n### Details\n\nAt line 59 of the affected file, the following PHP code constructs a JavaScript function call:\n\n```php\ndownloadURLOrAlertError(url, {}, '.' + format, progress);\n```\n\nThe `clean_title` value is echoed verbatim inside a single-quoted JavaScript string literal. No JavaScript-context escaping is applied, such as wrapping with `json_encode` or htmlspecialchars with appropriate flags. Because the value sits inside a JS string delimited by single quotes, any input containing a single quote character allows an attacker to terminate the string prematurely and inject arbitrary JavaScript expressions. The `clean_title` field is derived from user-supplied video title input, meaning any user with video creation or editing privileges can craft a malicious title. The injected script executes in the security context of whatever user loads the download page for that video, which may include administrators or authenticated users with elevated privileges.\n\n### PoC\n\n```python\nimport requests\n\ntarget = \"https://example.com\"\nlogin_url = f\"{target}/user\"\nupload_url = f\"{target}/video/addNew\"\n\nsession = requests.Session()\n\nsession.post(login_url, data={\n \"user[user]\": \"attacker\",\n \"user[pass]\": \"attackerpassword\"\n})\n\nmalicious_title = \"');alert(document.cookie);//\"\n\nsession.post(upload_url, data={\n \"title\": malicious_title,\n \"description\": \"poc\"\n})\n```\n\nAfter the video is created, navigate to:\n\n```\nhttps://example.com/plugin/CDN/downloadButtons.php?videos_id=\n```\n\nThe rendered page will contain:\n\n```javascript\ndownloadURLOrAlertError(url, {}, '');alert(document.cookie);//.' + format, progress);\n```\n\n### Impact\n\nAny user who can create or edit a video can store malicious JavaScript that will execute in the browser of any other user who visits the download page for that video. This includes scenarios where an attacker with a low-privilege account targets administrator sessions. Successful exploitation enables session cookie theft, credential harvesting, and actions performed on behalf of the victim within the application. Because the payload is stored server-side and triggers without further attacker interaction, all users who access download pages for attacker-controlled videos are at risk.", "title": "github - https://api.github.com/advisories/GHSA-gc3m-4mcr-h3pv" }, { "category": "description", "text": "WWBN AVideo is an open source video platform. Prior to version 26.0, WWBN/AVideo contains a stored cross-site scripting vulnerability in the CDN plugin's download buttons component. The `clean_title` field of a video record is interpolated directly into a JavaScript string literal without any escaping, allowing an attacker who can create or modify a video to inject arbitrary JavaScript that executes in the browser of any user who visits the affected download page. Version 26.0 fixes the issue.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33295" }, { "category": "description", "text": "WWBN AVideo is an open source video platform. Prior to version 26.0, WWBN/AVideo contains a stored cross-site scripting vulnerability in the CDN plugin's download buttons component. The `clean_title` field of a video record is interpolated directly into a JavaScript string literal without any escaping, allowing an attacker who can create or modify a video to inject arbitrary JavaScript that executes in the browser of any user who visits the affected download page. Version 26.0 fixes the issue.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33295.json" }, { "category": "description", "text": "### Summary\n\nWWBN/AVideo contains a stored cross-site scripting vulnerability in the CDN plugin's download buttons component. The `clean_title` field of a video record is interpolated directly into a JavaScript string literal without any escaping, allowing an attacker who can create or modify a video to inject arbitrary JavaScript that executes in the browser of any user who visits the affected download page.\n\n### Details\n\nAt line 59 of the affected file, the following PHP code constructs a JavaScript function call:\n\n```php\ndownloadURLOrAlertError(url, {}, '.' + format, progress);\n```\n\nThe `clean_title` value is echoed verbatim inside a single-quoted JavaScript string literal. No JavaScript-context escaping is applied, such as wrapping with `json_encode` or htmlspecialchars with appropriate flags. Because the value sits inside a JS string delimited by single quotes, any input containing a single quote character allows an attacker to terminate the string prematurely and inject arbitrary JavaScript expressions. The `clean_title` field is derived from user-supplied video title input, meaning any user with video creation or editing privileges can craft a malicious title. The injected script executes in the security context of whatever user loads the download page for that video, which may include administrators or authenticated users with elevated privileges.\n\n### PoC\n\n```python\nimport requests\n\ntarget = \"https://example.com\"\nlogin_url = f\"{target}/user\"\nupload_url = f\"{target}/video/addNew\"\n\nsession = requests.Session()\n\nsession.post(login_url, data={\n \"user[user]\": \"attacker\",\n \"user[pass]\": \"attackerpassword\"\n})\n\nmalicious_title = \"');alert(document.cookie);//\"\n\nsession.post(upload_url, data={\n \"title\": malicious_title,\n \"description\": \"poc\"\n})\n```\n\nAfter the video is created, navigate to:\n\n```\nhttps://example.com/plugin/CDN/downloadButtons.php?videos_id=\n```\n\nThe rendered page will contain:\n\n```javascript\ndownloadURLOrAlertError(url, {}, '');alert(document.cookie);//.' + format, progress);\n```\n\n### Impact\n\nAny user who can create or edit a video can store malicious JavaScript that will execute in the browser of any other user who visits the download page for that video. This includes scenarios where an attacker with a low-privilege account targets administrator sessions. Successful exploitation enables session cookie theft, credential harvesting, and actions performed on behalf of the victim within the application. Because the payload is stored server-side and triggers without further attacker interaction, all users who access download pages for attacker-controlled videos are at risk.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Packagist%2FGHSA-gc3m-4mcr-h3pv.json?alt=media" }, { "category": "other", "text": "0.00016", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N", "title": "CVSSV4" }, { "category": "other", "text": "8.2", "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-gc3m-4mcr-h3pv" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33295" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33295.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-gc3m-4mcr-h3pv.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-gc3m-4mcr-h3pv" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-gc3m-4mcr-h3pv" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/WWBN/AVideo/commit/30cdd825fa5778c1d678c2402be2413b84ee4833" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33295" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "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-2026-33295" } ] }