Vulnerability Description
Semantic MediaWiki 3.0.0 before 7.3.1 contains an uncontrolled recursion vulnerability in LegacyParser::getSubqueryDescription() that processes nested query tokens before depth limits apply. Unauthenticated attackers can submit deeply nested query elements to the action=ask API to consume substantial CPU and memory, tying up request workers.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/756492002752f937a9
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/e642f38c708dee7da5
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-
- https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-uncon
FAQ
What is CVE-2026-116871?
CVE-2026-116871 is a vulnerability with a CVSS score of 7.5 (HIGH). Semantic MediaWiki 3.0.0 before 7.3.1 contains an uncontrolled recursion vulnerability in LegacyParser::getSubqueryDescription() that processes nested query tokens before depth limits apply. Unauthent...
How severe is CVE-2026-116871?
CVE-2026-116871 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116871?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.