Vulnerability Description
Semantic MediaWiki from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows low-privilege editors to bypass smwgMaxNumRecurringEvents by supplying a large limit parameter. Attackers can save pages using #set_recurring_event without an end date to generate thousands or millions of date subobjects, exhausting CPU, memory, and database resources.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/commit/215599f0fc03274fd4
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-
- https://www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resou
FAQ
What is CVE-2026-116877?
CVE-2026-116877 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Semantic MediaWiki from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows low-privilege editors to bypass smwgMaxNumRecurringEvents by supplying a large limit ...
How severe is CVE-2026-116877?
CVE-2026-116877 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116877?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.