Vulnerability Details CVE-2026-116881
Semantic MediaWiki from 3.0.0 before 7.3.1 contains a cross-site scripting vulnerability that allows attackers to inject markup by storing malicious semantic property values rendered unescaped in autocomplete suggestions. When another user opens the property-value autocomplete with an empty query, jquery.autocomplete.js concatenates the raw PValueLookup API value into HTML via container.html(), altering the dropdown and potentially executing script.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 4.6%
CVSS Severity
CVSS v3 Score 6.1
References
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf
- https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-xss-via-property-value-autocomplete
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf