CVE-2026-104464 YesWiki before 4.6.7 SSRF via Bazar abonnements sync actor parameter
Unauthenticated attackers can perform server-side request forgery in YesWiki to access internal resources and read responses via Bazar entries.
- 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-2026-104464?
CVE-2026-104464 is a high-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 a server-side request forgery vulnerability that allows unauthenticated attackers to make server-side GET requests by supplying an unvalidated actor URL to the Bazar abonnements sync action. Attackers can target internal hosts or cloud metadata endpoints and chain attacker-controlled outbox first/next links, with fetched responses stored as readable Bazar entries.
Weakness: CWE-918
Which versions are affected by CVE-2026-104464?
How do I fix CVE-2026-104464?
No fix has been published for CVE-2026-104464 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-2026-104464 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104464 exists.
Sources
Also known as GHSA-ghw3-mg2w-7jg2, GHSA-wcjp-v62j-p5xm.