Auth bypass in Yeswiki
CVE-2026-104443
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/YesWiki/yeswiki/security/advisories/GHSA-9j7h-ccj2-jxv6 (vendor-advisory)
- www.vulncheck.com/advisories/yeswiki-before-4.6.7-scope-bypass-via-triples-dele… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-104443?
- CVE-2026-104443 is a high-severity vulnerability in Yeswiki, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2026-10-02.
- How severe is CVE-2026-104443?
- High severity. CVSS v3 base score is 8.1 out of 10.