SemanticMediaWiki from 3.1.0 before 7.3.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the unescaped default parameter in JsonResultPrinter. Attackers can lure victims to a crafted Special:Ask link with a zero-result query and request_type=special_page, executing JavaScript in the wiki origin to steal sessions or CSRF tokens.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-574v-j8hf-88h3 Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 10
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-28 15:30
- StatusPublished → AnalyzedNVD modified 2026-10-28 15:30
- StatusAwaiting Analysis → PublishedNVD modified 2026-10-27 14:13
- StatusPublished → Awaiting AnalysisNVD modified 2026-10-27 15:06
- StatusReceived → PublishedNVD modified 2026-10-27 14:13
- StatusPublished → ReceivedNVD modified 2026-10-27 14:16
- StatusReceived → PublishedNVD modified 2026-10-27 10:26
- StatusPublished → ReceivedNVD modified 2026-10-27 11:17
- CVSS5.3 (v4.0, CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N) → 5.3 (v4.0, CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)NVD modified 2026-10-27 11:17
- First seenCVSS 5.3 · semanticmediawikiNVD modified 2026-10-27 10:26
Affected (CPE criteria) 1
cpe:2.3:a:semantic-mediawiki:semantic_mediawiki:*:*:*:*:*:mediawiki:*:*
References 2
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-574v-j8hf-88h3 Exploit, Mitigation, Vendor Advisory
- https://www.vulncheck.com/advisories/semanticmediawiki-3.1.0-before-7.3.1-reflected-xss-via-jsonresultprinter-default-parameter Third Party Advisory