Is there a public exploit for CVE-2026-125339?

No public exploit for CVE-2026-125339 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-125339?

CVE-2026-125339 scores CVSS 6.1 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.18%.

What does CVE-2026-125339 affect?

CVE-2026-125339 affects wintercms winter.

6.1 Medium

Winter CMS is a content management system built on the Laravel PHP framework.

CVE-2026-125339

Winter CMS is a content management system built on the Laravel PHP framework. From 1.0.319 until 1.2.14, Backend\Classes\Controller::actionExists() accepts public handler-shaped methods as page actions, so a top-level GET request can invoke state-changing backend AJAX handlers without a CSRF token. Because backend routes use Route::any, CSRF validation skips GET, and the default SameSite=Lax session cookie is sent on cross-site navigation, an unauthenticated attacker can induce an authorized backend user to follow a link such as /backend/system/eventlogs/indexonEmptyLog. Affected handlers in the backend, CMS, and system modules can truncate logs, reset settings, alter backend user state, or delete CMS templates, while URL path segments can select a target record. This issue is fixed in version 1.2.14.

Assessment

CVSS: 6.1 (v3.1)
Severity: Medium
EPSS: 0.18% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 10 November 2026
Last updated: 12 November 2026
Affected: wintercms · winter
Assigner: GitHub_M

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H

At the source

EUVD (ENISA)

References

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