Skip to content
OpenAdvisories
Medium · 6.8 CVE-2026-104469 EUVD-2026-91480GHSA-c9hw-c2mv-jj5c

YesWiki before 4.6.7 Session Fixation via Login in AuthController.php

Published Oct 2, 2026 · Updated Oct 6, 2026 · Assigned by VulnCheck

Description

YesWiki before 4.6.7 contains a session fixation vulnerability that allows attackers to hijack authenticated sessions because login does not regenerate the PHP session ID. Attackers who set or learn a victim's pre-authentication YesWiki-* session cookie can reuse it after login to access private content and perform actions with the victim's privileges.

Affected products

VendorProductAffectedFixed
YesWiki yeswiki < 4.6.7 4.6.7

References