Advisory details:
github_osv / GHSA-mwjc-5j4x-r686
| Advisory ID | github_osv/GHSA-mwjc-5j4x-r686 |
| Aliases |
CVE-2026-33512
|
| Summary | AVideo has an unauthenticated decrypt oracle leaking any ciphertext ### Summary 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. Severity: High. ### Details - Entry: `plugin/API/get.json.php` is unauthenticated. - Handler: `plugin/API/API.php` `get_api_decryptString()` (lines ~5945–5966): ```php $string = decryptString($_REQUEST['string']); return new ApiObject($string, empty($string)); ``` No APISecret or user check occurs before decrypting. - Public ciphertext source: `view/url2Embed.json.php` returns `playLink`/`playEmbedLink` (`encryptString(json_encode(...))`) to any caller. ### PoC 1. Obtain ciphertext: ``` GET /view/url2Embed.json.php?url=https://example.com/video.mp4 ``` Copy `playLink`. 2. Decrypt without auth: ``` POST /plugin/API/get.json.php?APIName=decryptString Content-Type: application/x-www-form-urlencoded string=<playLink ciphertext> ``` Response contains the plaintext JSON (videoLink, title, users_id, etc.). ### Impact - Any encrypted payload produced by the platform can be decrypted by anyone. - Leaks tokens/links intended to be confidential; enables replay and tampering where secrecy was assumed. ### Mitigation - Require API secret or authenticated/authorized user for `decryptString`, or remove the endpoint. - Prefer one-way signatures (HMAC) instead of exposing generic decryption. - Rotate encryption keys/salts after patch to invalidate exposed ciphertexts. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 6.8 |
| Risk | 3.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 7.5 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-mwjc-5j4x-r686/GHSA-mwjc-5j4x-r686.json |
| generic_textual | HIGH |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/WWBN/AVideo | ||
| 3fdeecef37bb88967a02ccc9b9acc8da95de1c13 | Other | https://github.com/WWBN/AVideo/commit/3fdeecef37bb88967a02ccc9b9acc8da95de1c13 |
| CVE-2026-33512 | https://nvd.nist.gov/vuln/detail/CVE-2026-33512 | |
| GHSA-mwjc-5j4x-r686 | Other | https://github.com/WWBN/AVideo/security/advisories/GHSA-mwjc-5j4x-r686 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-24T18:34:28Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33512.json
Source Advisory: vulnrichment/CVE-2026-33512
[{'Exploitation': 'poc'},
{'Automatable': 'yes'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]