CVE-2026-104443 YesWiki before 4.6.7 Scope Bypass via Triples Delete API
Authenticated users can bypass scope checks in the triples delete API to remove admin memberships, causing site-wide lockouts and privilege escalation.
- 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-2026-104443?
CVE-2026-104443 is a high-severity missing authorization 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 an empty-filter scope bypass in the triples delete API that allows any authenticated user to delete or forge arbitrary semantic triples regardless of ownership. Attackers can send an empty filter to the triples delete endpoint to remove the admins-group membership triple, emptying the admin group and causing a site-wide authorization lockout.
Weakness: CWE-863
Which versions are affected by CVE-2026-104443?
How do I fix CVE-2026-104443?
No fix has been published for CVE-2026-104443 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-104443 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104443 exists.
Sources
Also known as GHSA-9j7h-ccj2-jxv6, GHSA-gr78-chgv-6fgg.