CVE-2026-104442 YesWiki before 4.6.7 Unauthenticated SSRF via syndication Action
Unauthenticated attackers can exploit YesWiki to perform server-side request forgery, accessing internal resources and reading fetched content.
- 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-2026-104442?
CVE-2026-104442 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 URLs by supplying a syndication action through the render handler's content parameter. Attackers can target internal hosts and ports, read back fetched feed content in the rendered page, and cause feed enclosures to be downloaded into the files directory.
Weakness: CWE-918
Which versions are affected by CVE-2026-104442?
How do I fix CVE-2026-104442?
No fix has been published for CVE-2026-104442 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-2026-104442 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104442 exists.
Sources
Also known as GHSA-jf5x-83r6-59f3, GHSA-jwh5-j4f4-c6xp.