Vulnerability · Published Apr 21, 2026 · Assigned by GitHub_M

CVE-2026-40929WWBN AVideo's missing CSRF protection in objects/commentDelete.json.php enables mass comment deletion against moderators and content creators

Medium 5.4

In plain English

A medium-severity cross-site request forgery in AVideo from WWBN. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.1%top 98.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

WWBN AVideo is an open source video platform. In versions 29.0 and prior, `objects/commentDelete.json.php` is a state-mutating JSON endpoint that deletes comments but performs no CSRF validation. It does not call `forbidIfIsUntrustedRequest()`, does not verify a CSRF/global token, and does not check `Origin`/`Referer`. Because AVideo intentionally sets `session.cookie_samesite=None` (to support cross-origin embed players), a cross-site request from any attacker-controlled page automatically carries the victim's `PHPSESSID`. Any authenticated victim who has authority to delete one or more comments (site moderators, video owners, and comment authors) can be tricked into deleting comments en masse simply by visiting an attacker page. Commit 184f36b1896f3364f864f17c1acca3dd8df3af27 contains a fix.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	wwbn/avideo	no fix listed	GHSA-8qm8-g55h-xmqr

Affected products (as reported)

Vendor	Product	Versions
WWBN	AVideo	<= 29.0

Weakness: CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-8qm8-g55h-xmqr x_refsource_CONFIRM
https://github.com/WWBN/AVideo/commit/184f36b1896f3364f864f17c1acca3dd8df3af27 x_refsource_MISC