High severity · published Oct 2, 2026
CVE-2026-104443
YesWiki before 4.6.7 Scope Bypass via Triples Delete API
8.1
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YE
yeswiki · YesWiki
before 4.6.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104443
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104443
vendor-advisory
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-9j7h-ccj2-jxv6
third-party-advisory
https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-scope-bypass-via-triples-delete-api
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