CVE-2026-40929Public exploitNetwork attack vector

Mass comment deletion via missing CSRF validation

Published Apr 21, 2026 · Updated Apr 21, 2026

CSRF in objects/commentDelete.json.php in WWBN AVideo 29.0 and earlier allows remote attackers to delete comments via a cross-site request. The endpoint accepts GET or POST comment identifiers and invokes Comment::delete() without origin, referrer, or token validation while SameSite=None sends the victim's session cookie. A logged-in moderator, video owner, or comment author must visit attacker-controlled content, limiting deletion to comments that the victim is authorized to manage.

CVSS severity5.4
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in objects/commentDelete.json.php in WWBN AVideo 29.0 and earlier allows remote attackers to delete comments via a cross-site request. The endpoint accepts GET or POST comment identifiers and invokes Comment::delete() without origin, referrer, or token validation while SameSite=None sends the victim's session cookie. A logged-in moderator, video owner, or comment author must visit attacker-controlled content, limiting deletion to comments that the victim is authorized to manage.

The record

CVE
CVE-2026-40929
Published
Apr 21, 2026
Updated
Apr 21, 2026
Vendor
World Wide Broadcast Network
Product
AVideo
Classifications
CWE-352, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

World Wide Broadcast Network · AVideoversion=<= 29.0

Published CVSS scores

5.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1485Data Destruction

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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