{"id":"CVE-2026-33512","aliases":["EUVD-2026-14479","GHSA-mwjc-5j4x-r686"],"status":"published","title":"AVideo has an unauthenticated decrypt oracle leaking any ciphertext","description":"WWBN AVideo is an open source video platform. In versions up to and including 26.0, the API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Commit 3fdeecef37bb88967a02ccc9b9acc8da95de1c13 contains a patch.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00248,"percentile":0.1624,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-312","CWE-326","CWE-327"],"published":"2026-03-20T21:55:12Z","modified":"2026-10-28T02:31:07Z","affected":[{"source":"ghsa","ecosystem":"Packagist","package":"wwbn/avideo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"26.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"wwbn/avideo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"26.0"}]}],"versions":["10.4","10.8","11","11.1","11.1.1","11.5","11.6","12.4","14.3","14.3.1","14.4","18.0","21.0","22.0","24.0","25.0","26.0"]}],"products":[{"vendor":"wwbn","product":"avideo"}],"references":[{"url":"https://github.com/WWBN/AVideo/security/advisories/GHSA-mwjc-5j4x-r686","tags":["x_refsource_CONFIRM","Exploit","Vendor Advisory","advisory","web"]},{"url":"https://github.com/WWBN/AVideo/commit/3fdeecef37bb88967a02ccc9b9acc8da95de1c13","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33512","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-mwjc-5j4x-r686"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33512.json","tags":["advisory"]},{"url":"https://github.com/WWBN/AVideo","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-33512","title":"AVideo has an unauthenticated decrypt oracle leaking any ciphertext","description":"WWBN AVideo is an open source video platform. In versions up to and including 26.0, the API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Commit 3fdeecef37bb88967a02ccc9b9acc8da95de1c13 contains a patch.","status":"published","published":"2026-03-23T18:17:47.07Z","modified":"2026-03-24T18:34:59.006Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-287","CWE-312","CWE-326","CWE-327"],"updated_at":"2026-11-02T14:20:07.609948Z"}],"euvd":[{"id":"EUVD-2026-14479","description":"WWBN AVideo is an open source video platform. In versions up to and including 26.0, the API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Commit 3fdeecef37bb88967a02ccc9b9acc8da95de1c13 contains a patch.","status":"published","published":"2026-03-23T18:17:47Z","modified":"2026-03-24T18:34:59Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T19:25:29.933437Z"}],"ghsa":[{"id":"GHSA-mwjc-5j4x-r686","title":"AVideo has an unauthenticated decrypt oracle leaking any ciphertext","description":"### Summary\nThe API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Severity: High.\n\n### Details\n- Entry: `plugin/API/get.json.php` is unauthenticated.\n- Handler: `plugin/API/API.php` `get_api_decryptString()` (lines ~5945–5966):\n  ```php\n  $string = decryptString($_REQUEST['string']);\n  return new ApiObject($string, empty($string));\n  ```\n  No APISecret or user check occurs before decrypting.\n- Public ciphertext source: `view/url2Embed.json.php` returns `playLink`/`playEmbedLink` (`encryptString(json_encode(...))`) to any caller.\n\n### PoC\n1. Obtain ciphertext:\n   ```\n   GET /view/url2Embed.json.php?url=https://example.com/video.mp4\n   ```\n   Copy `playLink`.\n2. Decrypt without auth:\n   ```\n   POST /plugin/API/get.json.php?APIName=decryptString\n   Content-Type: application/x-www-form-urlencoded\n\n   string=\u003cplayLink ciphertext\u003e\n   ```\n   Response contains the plaintext JSON (videoLink, title, users_id, etc.).\n\n### Impact\n- Any encrypted payload produced by the platform can be decrypted by anyone.\n- Leaks tokens/links intended to be confidential; enables replay and tampering where secrecy was assumed.\n\n### Mitigation\n- Require API secret or authenticated/authorized user for `decryptString`, or remove the endpoint.\n- Prefer one-way signatures (HMAC) instead of exposing generic decryption.\n- Rotate encryption keys/salts after patch to invalidate exposed ciphertexts.","status":"published","published":"2026-03-20T21:55:12Z","modified":"2026-03-25T14:32:37Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-287","CWE-312","CWE-326","CWE-327"],"updated_at":"2026-11-02T14:39:41.724707Z"}],"nvd":[{"id":"CVE-2026-33512","description":"WWBN AVideo is an open source video platform. In versions up to and including 26.0, the API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Commit 3fdeecef37bb88967a02ccc9b9acc8da95de1c13 contains a patch.","status":"published","published":"2026-03-23T19:16:40.42Z","modified":"2026-06-17T10:37:37.897Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-287","CWE-312","CWE-326","CWE-327"],"updated_at":"2026-11-02T14:12:10.568062Z"}],"osv":[{"id":"CVE-2026-33512","title":"AVideo has an unauthenticated decrypt oracle leaking any ciphertext","description":"WWBN AVideo is an open source video platform. In versions up to and including 26.0, the API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Commit 3fdeecef37bb88967a02ccc9b9acc8da95de1c13 contains a patch.","status":"published","published":"2026-03-23T18:17:47.07Z","modified":"2026-10-28T02:31:07.759526872Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-287","CWE-312","CWE-326","CWE-327"],"updated_at":"2026-11-02T15:45:01.896044Z"},{"id":"GHSA-mwjc-5j4x-r686","title":"AVideo has an unauthenticated decrypt oracle leaking any ciphertext","description":"### Summary\nThe API plugin exposes a `decryptString` action without any authentication. Anyone can submit ciphertext and receive plaintext. Ciphertext is issued publicly (e.g., `view/url2Embed.json.php`), so any user can recover protected tokens/metadata. Severity: High.\n\n### Details\n- Entry: `plugin/API/get.json.php` is unauthenticated.\n- Handler: `plugin/API/API.php` `get_api_decryptString()` (lines ~5945–5966):\n  ```php\n  $string = decryptString($_REQUEST['string']);\n  return new ApiObject($string, empty($string));\n  ```\n  No APISecret or user check occurs before decrypting.\n- Public ciphertext source: `view/url2Embed.json.php` returns `playLink`/`playEmbedLink` (`encryptString(json_encode(...))`) to any caller.\n\n### PoC\n1. Obtain ciphertext:\n   ```\n   GET /view/url2Embed.json.php?url=https://example.com/video.mp4\n   ```\n   Copy `playLink`.\n2. Decrypt without auth:\n   ```\n   POST /plugin/API/get.json.php?APIName=decryptString\n   Content-Type: application/x-www-form-urlencoded\n\n   string=\u003cplayLink ciphertext\u003e\n   ```\n   Response contains the plaintext JSON (videoLink, title, users_id, etc.).\n\n### Impact\n- Any encrypted payload produced by the platform can be decrypted by anyone.\n- Leaks tokens/links intended to be confidential; enables replay and tampering where secrecy was assumed.\n\n### Mitigation\n- Require API secret or authenticated/authorized user for `decryptString`, or remove the endpoint.\n- Prefer one-way signatures (HMAC) instead of exposing generic decryption.\n- Rotate encryption keys/salts after patch to invalidate exposed ciphertexts.","status":"published","published":"2026-03-20T21:55:12Z","modified":"2026-03-25T14:56:26.49395Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-287","CWE-312","CWE-326","CWE-327"],"updated_at":"2026-11-02T15:46:52.534897Z"}]}}