AVideo: Video Moderator Privilege Escalation via Ownership Transfer Enables Arbitrary Video Deletion

Exploitation

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

CVSS

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

EPSS

• CVE-2026-33650: 0.24% estimated exploitation activity in the next 30 days; percentile 15.72 (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 A user with the "Videos Moderator" permission can escalate privileges to perform full video management operations — including ownership transfer and deletion of any video — despite the permission being documented as only allowing video publicity changes (Active, Inactive, Unlisted). The root cause is that Permissions::canModerateVideos() is used as an authorization gate for full video editing in videoAddNew.json.php, while videoDelete.json.php only checks ownership, creating an asymmetric authorization boundary exploitable via a two-step ownership-transfer-then-delete chain. Details The PERMISSIONINACTIVATEVIDEOS (ID 11) permission is described as a limited moderator role in plugin/Permissions/Permissions.php:213: However, Permissions::canModerateVideos() (Permissions.php:175) is reused as an authorization gate in multiple locations in videoAddNew.json.php that go far beyond status changes: 1. Upload gate bypass (videoAddNew.json.php:10): User::canUpload() (user.php:2650)…

Published by the source

25 Mar 2026, 17:49 UTC

Last modified by the source

25 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-8x77-f38v-4m5j

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# Patch Next advisory brief: CVE-2026-33650

Advisory: AVideo: Video Moderator Privilege Escalation via Ownership Transfer Enables Arbitrary Video Deletion
IDs: CVE-2026-33650, GHSA-8x77-f38v-4m5j
Record: https://patchnext.com/advisories/cve-2026-33650 (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: High (CVSS 7.6)
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-8x77-f38v-4m5j (GitHub-reviewed advisory GHSA-8x77-f38v-4m5j lists affected ranges: Packagist wwbn/avideo >=0 <=26.0)

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