CVE-2026-16057Public exploitNetwork attack vector

Author-level content deletion via unchecked AJAX handler

Published Aug 3, 2026 · Updated Aug 3, 2026

Missing authorization in Contest Gallery before 30.0.7 allows remote authenticated users to permanently delete arbitrary WordPress content. The post_cg_youtube_delete_from_library AJAX handler accepts attacker-chosen post IDs and deletes them without per-object capability or nonce checks. Author-level access is required, and successful requests permanently remove posts, pages, or other content owned by other users.

CVSS severity6.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Contest Gallery before 30.0.7 allows remote authenticated users to permanently delete arbitrary WordPress content. The post_cg_youtube_delete_from_library AJAX handler accepts attacker-chosen post IDs and deletes them without per-object capability or nonce checks. Author-level access is required, and successful requests permanently remove posts, pages, or other content owned by other users.

The record

CVE
CVE-2026-16057
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
Wasiliy Strecker / ContestGallery developer
Product
Contest Gallery
Classifications
CWE-862, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=0 <30.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wasiliy Strecker / ContestGallery developer · Contest Galleryversion=0 <30.0.7

Published CVSS scores

6.5WPScanCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
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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