AVideo has User Group-Based Category Access Control Bypass via Missing and Broken Group Filtering in categories.json.php

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-2026-34364: 0.33% estimated exploitation activity in the next 30 days; percentile 26.45 (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 categories.json.php endpoint, which serves the category listing API, fails to enforce user group-based access controls on categories. In the default request path (no ?user= parameter), user group filtering is entirely skipped, exposing all non-private categories including those restricted to specific user groups. When the ?user= parameter is supplied, a type confusion bug causes the filter to use the admin user's (userid=1) group memberships instead of the current user's, rendering the filter ineffective. Details The vulnerability has two related failures in objects/categories.json.php and objects/category.php: 1. Default request — group filtering completely skipped In categories.json.php:17-24, when $GET['user'] is not set, $sameUserGroupAsMe defaults to false: In category.php:438-452, the user group filter is gated on $sameUserGroupAsMe being truthy: Since $sameUserGroupAsMe = false, the entire block is skipped. All non-private categories are returned regardless of…

Published by the source

30 Mar 2026, 17:49 UTC

Last modified by the source

30 Mar 2026, 17:49 UTC

Source last checked

26 Oct 2026, 14:39 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-73gr-r64q-7jh4

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-34364

Advisory: AVideo has User Group-Based Category Access Control Bypass via Missing and Broken Group Filtering in categories.json.php
IDs: CVE-2026-34364, GHSA-73gr-r64q-7jh4
Record: https://patchnext.com/advisories/cve-2026-34364 (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-73gr-r64q-7jh4 (GitHub-reviewed advisory GHSA-73gr-r64q-7jh4 lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

Commands are suggestions: review each one before running it.