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CVE-2025-12849

Contest Gallery <= 28.0.2 - Missing Authorization

Published: Nov 15, 2025Updated: Nov 18, 2025 Sources: CVE List NVDCWE-862
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.3%
Top 80.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

The Contest Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 28.0.2. This is due to the plugin registering the `cg_check_wp_admin_upload_v10` AJAX action for both authenticated and unauthenticated users without implementing capability checks or nonce verification. This makes it possible for unauthenticated attackers to inject arbitrary WordPress media attachments into galleries and manipulate gallery metadata via the `cg_check_wp_admin_upload_v10` action. It does not enable an attacker to move or upload files.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-862

Affected Products

Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripecontest-gallery
On-prem
Web & CMS Plugins / site-builder
contest-gallerycommercialWeb & CMS Pluginsaka contest gallery

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/e000c4ad-43ec-4ad0-89f9-74e9e6d8b917?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/contest-gallery/tags/28.0.2/v10/include-functions-v10.php#L42
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/contest-gallery/tags/28.0.2/v10/include-functions-v10.php#L47
plugins.trac.wordpress.org
and 4 more references View all →

Timeline

Published
Nov 15, 2025
Last Updated
Nov 18, 2025

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