CVE-2026-104470 YesWiki before 4.6.7 SSRF via Bazar valeur Action url Parameter
Page editors can exploit a Server-Side Request Forgery vulnerability in YesWiki to access internal services and read responses via the Bazar action URL parameter.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104470?
CVE-2026-104470 is a medium-severity server-side request forgery vulnerability in yeswiki, published on 2 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
YesWiki before 4.6.7 contains a server-side request forgery vulnerability that allows page editors to make the server fetch arbitrary URLs via the url parameter of the Bazar valeur action. Attackers can embed the action with a champ parameter in wiki markup to reach loopback or internal services and partially read responses rendered into the page.
Weakness: CWE-918
Which versions are affected by CVE-2026-104470?
How do I fix CVE-2026-104470?
No fix has been published for CVE-2026-104470 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-2026-104470 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104470 exists.
Sources
Also known as GHSA-32r4-8mw9-77h4.