CVE-2026-33512: Wwbn/avideo AVideo Has An Unauthenticated Decrypt Vulnerability
HIGHCVE-2026-33512 is a HIGH (CVSS 7.5) avideo has an unauthenticated decrypt vulnerability (CWE-312: Cleartext Storage of Sensitive Information) affecting Wwbn/avideo libraries in the Packagist ecosystem. The issue involves avideo has an unauthenticated decrypt oracle leaking any ciphertext. Remediation is available in the latest vendor maintenance releases.
CVE-2026-33512 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
How to Fix CVE-2026-33512
To remediate this vulnerability, upgrade all affected Wwbn/avideo dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade wwbn/avideo to Latest secure releaseRun the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for wwbn/avideoHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-33512, inspect your project dependencies for Wwbn/avideo:
inspect dependencies for wwbn/avideoAnalyze the terminal output to locate any version of Wwbn/avideo in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-312: Cleartext Storage of Sensitive Information, where the product stores sensitive information in cleartext within a resource that might be accessible to another control sphere. In Wwbn/avideo, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-33512 Affected Wwbn/avideo Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
wwbn/avideo
|
Packagist |
≤ 26.0
|
|
References
Frequently Asked Questions
What is CVE-2026-33512?
Which Wwbn/avideo versions are affected?
What version fixes CVE-2026-33512?
Is wwbn/avideo affected?
What is the CVSS score of CVE-2026-33512?
What CWE is associated with CVE-2026-33512?
How can I check Packagist dependencies for CVE-2026-33512?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-mwjc-5j4x-r686",
"modified" : "2026-03-25T14:32:36Z",
"published" : "2026-03-20T21:55:12Z",
"aliases" : [ "CVE-2026-33512" ],
"summary" : "AVideo has an unauthenticated decrypt oracle leaking any ciphertext",
"details" : "### 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=<playLink ciphertext>\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.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "wwbn/avideo"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"last_affected" : "26.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/WWBN/AVideo/security/advisories/GHSA-mwjc-5j4x-r686"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-33512"
}, {
"type" : "WEB",
"url" : "https://github.com/WWBN/AVideo/commit/3fdeecef37bb88967a02ccc9b9acc8da95de1c13"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/WWBN/AVideo"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-287", "CWE-312", "CWE-326", "CWE-327" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-03-20T21:55:12Z",
"nvd_published_at" : "2026-03-23T19:16:40Z"
}
}