CVE-2026-104469 YesWiki before 4.6.7 Session Fixation via Login in AuthController.php
Attackers can hijack authenticated sessions in YesWiki by reusing pre-authentication cookies, gaining access to private content and user privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-104469?
CVE-2026-104469 is a high-severity authentication bypass vulnerability in yeswiki, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-384
Which versions are affected by CVE-2026-104469?
How do I fix CVE-2026-104469?
No fix has been published for CVE-2026-104469 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-104469 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104469 exists.
Sources
Also known as GHSA-7fvc-v2hp-5pwh, GHSA-c9hw-c2mv-jj5c.