AVideo has Unauthenticated Information Disclosure of User Group Permission Mappings via Permissions Plugin

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-33501: 0.45% estimated exploitation activity in the next 30 days; percentile 38.93 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The endpoint plugin/Permissions/View/Usersgroupspermissions/list.json.php lacks any authentication or authorization check, allowing unauthenticated users to retrieve the complete permission matrix mapping user groups to plugins. All sibling endpoints in the same directory (add.json.php, delete.json.php, index.php) properly require User::isAdmin(), indicating this is an oversight. Details The vulnerable file at plugin/Permissions/View/Usersgroupspermissions/list.json.php:1-7 contains: This calls ObjectYPT::getAll() (defined in objects/Object.php:98-111), which executes: This returns all rows from the usersgroupspermissions table as JSON with no access control. Compare with the sibling add.json.php:10-15 and delete.json.php:9-14, which both enforce: Similarly, index.php:6-8 (the admin page that loads this data via AJAX) checks: No .htaccess or web server configuration restricts direct access to this endpoint. PoC Expected response (admin-only data): Each row reveals: -…

Published by the source

20 Mar 2026, 20:57 UTC

Last modified by the source

25 Mar 2026, 20:31 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-96qp-8cmq-jvq8

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# Patch Next advisory brief: CVE-2026-33501

Advisory: AVideo has Unauthenticated Information Disclosure of User Group Permission Mappings via Permissions Plugin
IDs: CVE-2026-33501, GHSA-96qp-8cmq-jvq8
Record: https://patchnext.com/advisories/cve-2026-33501 (revision 1, source checked 26 Oct 2026, 14:39 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist wwbn/avideo: affected <= 26.0

## Suggested inspection (read-only)
- Packagist wwbn/avideo: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on wwbn/avideo.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-96qp-8cmq-jvq8 (GitHub-reviewed advisory GHSA-96qp-8cmq-jvq8 lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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