CVE-2026-104441 YesWiki before 4.6.7 Unauthenticated SSRF via valeur Action
Unauthenticated attackers can exploit YesWiki to perform server-side request forgery, probing internal services and reading response data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104441?
CVE-2026-104441 is a medium-severity server-side request forgery vulnerability in yeswiki, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
YesWiki before 4.6.7 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server fetch arbitrary hosts and ports via the {{valeur}} action's url parameter. Attackers can submit the action through the content parameter of handlers/page/render.php to probe internal HTTP services and read back response content matching fiche markup.
Weakness: CWE-918
Which versions are affected by CVE-2026-104441?
How do I fix CVE-2026-104441?
No fix has been published for CVE-2026-104441 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-104441 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104441 exists.
Sources
Also known as GHSA-9396-2vxw-5hf3, GHSA-pghp-rrp4-q666.