CVE-2026-25035Public exploitNetwork attack vector

Unauthenticated action access via missing capability check

Published Mar 25, 2026 · Updated Mar 25, 2026

Missing authorization in Contest Gallery 28.1.2.2 and earlier allows remote attackers to access a protected AJAX action without authentication. The post_cg1l_current_frontend_nonce action lacks a capability check and returns a frontend nonce to unauthenticated requests. No account or user interaction is required; public records do not identify the downstream operation needed to turn the nonce disclosure into account takeover.

CVSS severity9.8
Critical
EPSS probability0.42%
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 28.1.2.2 and earlier allows remote attackers to access a protected AJAX action without authentication. The post_cg1l_current_frontend_nonce action lacks a capability check and returns a frontend nonce to unauthenticated requests. No account or user interaction is required; public records do not identify the downstream operation needed to turn the nonce disclosure into account takeover.

The record

CVE
CVE-2026-25035
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
Wasiliy Strecker / ContestGallery developer
Product
Contest Gallery
Classifications
CWE-288, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=n/a <=<= 28.1.2.2 changes=[{"at":"28.1.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wasiliy Strecker / ContestGallery developer · Contest Galleryversion=n/a <=<= 28.1.2.2 changes=[{"at":"28.1.3","status":"unaffected"}]

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
9.8PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-288Authentication Bypass Using an Alternate Path or Channel
T1190Exploit Public-Facing Application

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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