Vulnerability Description
SemanticMediaWiki from 4.2.0 before 7.2.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject HTML via unescaped cstate parameters in Special:FacetedSearch. Attackers can craft URLs with q, a matching crc32 csum or filtered=1, and cstate values that break out of hidden input attributes to execute script in victims' browsers.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Semantic-Mediawiki | Semantic Mediawiki | >= 4.2.0, < 7.2.1 |
Related Weaknesses (CWE)
References
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-ExploitMitigationVendor Advisory
- https://www.vulncheck.com/advisories/semanticmediawiki-4.2.0-before-7.2.1-reflecThird Party Advisory
FAQ
What is CVE-2026-116891?
CVE-2026-116891 is a vulnerability with a CVSS score of 6.1 (MEDIUM). SemanticMediaWiki from 4.2.0 before 7.2.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject HTML via unescaped cstate parameters in Special:Facete...
How severe is CVE-2026-116891?
CVE-2026-116891 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116891?
Check the references section above for vendor advisories and patch information. Affected products include: Semantic-Mediawiki Semantic Mediawiki.