{"id":"CVE-2026-47694","aliases":["EUVD-2026-33304","GHSA-c8h8-vq34-9fw2"],"status":"published","title":"WWBN AVideo: Stored XSS via unescaped Gallery category description","description":"WWBN AVideo is an open source video platform. In 29.0 and earlier, AVideo stores category descriptions from user input and later renders category_description as raw HTML in the Gallery view. A user who can create or edit categories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page. This is a stored XSS in the category description field, separate from previously fixed XSS issues in video titles or comments.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00162,"percentile":0.05457,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-05-29T13:00:37Z","modified":"2026-10-28T02:30:37Z","affected":[{"source":"ghsa","ecosystem":"Packagist","package":"WWBN/AVideo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"29.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"WWBN/AVideo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"29.0"}]}]}],"products":[{"vendor":"wwbn","product":"avideo"}],"references":[{"url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-c8h8-vq34-9fw2","tags":["x_refsource_CONFIRM","exploit","Exploit","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47694","tags":["advisory"]},{"url":"https://github.com/WWBN/AVideo/commit/6a6ff1f5bff1904f91f612db9f0da083295392b1","tags":["web"]},{"url":"https://github.com/advisories/GHSA-c8h8-vq34-9fw2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47694.json","tags":["advisory"]},{"url":"https://github.com/WWBN/AVideo","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-47694","title":"WWBN AVideo: Stored XSS via unescaped Gallery category description","description":"WWBN AVideo is an open source video platform. In 29.0 and earlier, AVideo stores category descriptions from user input and later renders category_description as raw HTML in the Gallery view. A user who can create or edit categories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page. This is a stored XSS in the category description field, separate from previously fixed XSS issues in video titles or comments.","status":"published","published":"2026-05-29T13:00:37.239Z","modified":"2026-05-30T02:29:30.64Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:36:40.478484Z"}],"euvd":[{"id":"EUVD-2026-33304","description":"WWBN AVideo is an open source video platform. In 29.0 and earlier, AVideo stores category descriptions from user input and later renders category_description as raw HTML in the Gallery view. A user who can create or edit categories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page. This is a stored XSS in the category description field, separate from previously fixed XSS issues in video titles or comments.","status":"published","published":"2026-05-29T13:00:37Z","modified":"2026-05-30T02:29:30Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:20:59.967985Z"}],"ghsa":[{"id":"GHSA-c8h8-vq34-9fw2","title":"WWBN AVideo: Stored XSS via unescaped Gallery category description","description":"### Summary\n\n  AVideo stores category descriptions from user input and later renders `category_description` as raw HTML in the Gallery view. A user who can create or edit\ncategories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page.\n\n  This is a stored XSS in the category `description` field, separate from previously fixed XSS issues in video titles or comments.\n\n  ### Details\n\n  Source:\n\n  `objects/categoryAddNew.json.php`\n\n  ```php\n  $objCat-\u003esetDescription($_POST['description']);\n\n  Storage setter:\n\n  objects/category.php\n\n  public function setDescription($description)\n  {\n      $this-\u003edescription = $description;\n  }\n```\n  Sink:\n\n  `plugin/Gallery/view/mainAreaCategory.php`\n```\n  \u003cdiv id=\"categoryDescription\u003c?php echo $duid; ?\u003e\" style=\"display: none;\"\u003e\u003c?php echo $videos[0]['category_description']; ?\u003e\u003c/div\u003e\n```\n  The value is rendered without `htmlspecialchars()`, `htmlentities()`, `HTMLPurifier`, or equivalent output encoding.\n\n  ### PoC\n\n  Prerequisites:\n\n  - AVideo current master / v29.0\n  - User account with permission to create or edit categories\n  - Gallery plugin/view enabled\n  - At least one video assigned to the affected category\n\n  Steps:\n\n  1. Log in as a user who can create or edit categories.\n  2. Create or edit a category.\n  3. Set the category description to:\n```\n  \u003cimg src=x onerror=alert(document.domain)\u003e\n```\n  4. Save the category.\n  5. Assign at least one video to that category.\n  6. Open the Gallery/category page that renders the category section.\n  7. The payload is inserted into the page as raw HTML and JavaScript executes.\n\n  ### Impact\n\n  An attacker with category edit permission can execute JavaScript in the browser of users or administrators who view the affected Gallery/category page. This can\n  be used to perform actions as the victim, steal same-origin data accessible to JavaScript, or abuse administrative UI actions if an administrator views the\n  malicious category.\n\n### Recommended fix\n\n- Sanitize category descriptions on input with the same HTML policy used for video descriptions, or store plain text only.\n- Encode on output:\n\n```php\necho htmlspecialchars($videos[0]['category_description'], ENT_QUOTES, 'UTF-8');\n```\n\n- If limited HTML is intended, run the description through HTMLPurifier before storage or before render.\n- Add regression tests for category description rendering in Gallery views.","status":"published","published":"2026-06-04T18:46:31Z","modified":"2026-06-04T18:48:24Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:40:16.698699Z"}],"nvd":[{"id":"CVE-2026-47694","description":"WWBN AVideo is an open source video platform. In 29.0 and earlier, AVideo stores category descriptions from user input and later renders category_description as raw HTML in the Gallery view. A user who can create or edit categories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page. This is a stored XSS in the category description field, separate from previously fixed XSS issues in video titles or comments.","status":"published","published":"2026-05-29T14:16:31.997Z","modified":"2026-07-21T12:10:00.09Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:21.244426Z"}],"osv":[{"id":"CVE-2026-47694","title":"WWBN AVideo: Stored XSS via unescaped Gallery category description","description":"WWBN AVideo is an open source video platform. In 29.0 and earlier, AVideo stores category descriptions from user input and later renders category_description as raw HTML in the Gallery view. A user who can create or edit categories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page. This is a stored XSS in the category description field, separate from previously fixed XSS issues in video titles or comments.","status":"published","published":"2026-05-29T13:00:37.239Z","modified":"2026-10-28T02:30:37.694550457Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:06.231145Z"},{"id":"GHSA-c8h8-vq34-9fw2","title":"WWBN AVideo: Stored XSS via unescaped Gallery category description","description":"### Summary\n\n  AVideo stores category descriptions from user input and later renders `category_description` as raw HTML in the Gallery view. A user who can create or edit\ncategories can store JavaScript in a category description, which executes when another user views the affected Gallery/category page.\n\n  This is a stored XSS in the category `description` field, separate from previously fixed XSS issues in video titles or comments.\n\n  ### Details\n\n  Source:\n\n  `objects/categoryAddNew.json.php`\n\n  ```php\n  $objCat-\u003esetDescription($_POST['description']);\n\n  Storage setter:\n\n  objects/category.php\n\n  public function setDescription($description)\n  {\n      $this-\u003edescription = $description;\n  }\n```\n  Sink:\n\n  `plugin/Gallery/view/mainAreaCategory.php`\n```\n  \u003cdiv id=\"categoryDescription\u003c?php echo $duid; ?\u003e\" style=\"display: none;\"\u003e\u003c?php echo $videos[0]['category_description']; ?\u003e\u003c/div\u003e\n```\n  The value is rendered without `htmlspecialchars()`, `htmlentities()`, `HTMLPurifier`, or equivalent output encoding.\n\n  ### PoC\n\n  Prerequisites:\n\n  - AVideo current master / v29.0\n  - User account with permission to create or edit categories\n  - Gallery plugin/view enabled\n  - At least one video assigned to the affected category\n\n  Steps:\n\n  1. Log in as a user who can create or edit categories.\n  2. Create or edit a category.\n  3. Set the category description to:\n```\n  \u003cimg src=x onerror=alert(document.domain)\u003e\n```\n  4. Save the category.\n  5. Assign at least one video to that category.\n  6. Open the Gallery/category page that renders the category section.\n  7. The payload is inserted into the page as raw HTML and JavaScript executes.\n\n  ### Impact\n\n  An attacker with category edit permission can execute JavaScript in the browser of users or administrators who view the affected Gallery/category page. This can\n  be used to perform actions as the victim, steal same-origin data accessible to JavaScript, or abuse administrative UI actions if an administrator views the\n  malicious category.\n\n### Recommended fix\n\n- Sanitize category descriptions on input with the same HTML policy used for video descriptions, or store plain text only.\n- Encode on output:\n\n```php\necho htmlspecialchars($videos[0]['category_description'], ENT_QUOTES, 'UTF-8');\n```\n\n- If limited HTML is intended, run the description through HTMLPurifier before storage or before render.\n- Add regression tests for category description rendering in Gallery views.","status":"published","published":"2026-06-04T18:46:31Z","modified":"2026-09-10T03:51:08.419797686Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:44.927642Z"}]}}