{"id":"CVE-2026-116883","state":"PUBLISHED","title":"Semantic MediaWiki 3.1.0 before 7.3.1 Stored XSS via Schema Descriptions","description":"Semantic MediaWiki from 3.1.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows authenticated schema editors to inject HTML through schema descriptions. Attackers with the smw-schemaedit permission can save HTML that is passed unescaped to Html::rawElement() in HtmlBuilder, altering pages and targeting users who view the schema.","publishedAt":"2026-10-27T10:23:34.396Z","updatedAt":"2026-10-27T10:26:46.130Z","severity":{"score":4.8,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["SemanticMediaWiki SemanticMediaWiki"],"affected":[{"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","defaultStatus":"unaffected","versions":[{"version":"3.1.0","status":"affected","lessThan":"7.3.1","versionType":"semver"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-2xr9-cr6h-wr6m","https://www.vulncheck.com/advisories/semantic-mediawiki-3.1.0-before-7.3.1-stored-xss-via-schema-descriptions"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116883.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116883","state":"PUBLISHED","datePublished":"2026-10-27T10:23:34.396Z","dateUpdated":"2026-10-27T10:26:46.130Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-27T01:01:43.272Z"},"containers":{"cna":{"title":"Semantic MediaWiki 3.1.0 before 7.3.1 Stored XSS via Schema Descriptions","descriptions":[{"lang":"en","value":"Semantic MediaWiki from 3.1.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows authenticated schema editors to inject HTML through schema descriptions. Attackers with the smw-schemaedit permission can save HTML that is passed unescaped to Html::rawElement() in HtmlBuilder, altering pages and targeting users who view the schema."}],"affected":[{"vendor":"SemanticMediaWiki","product":"SemanticMediaWiki","defaultStatus":"unaffected","versions":[{"version":"3.1.0","status":"affected","lessThan":"7.3.1","versionType":"semver"},{"version":"7.3.1","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-2xr9-cr6h-wr6m","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-2xr9-cr6h-wr6m)"},{"url":"https://www.vulncheck.com/advisories/semantic-mediawiki-3.1.0-before-7.3.1-stored-xss-via-schema-descriptions","name":"VulnCheck Advisory: Semantic MediaWiki 3.1.0 before 7.3.1 Stored XSS via Schema Descriptions","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-27T10:26:46.130Z"},"datePublic":"2026-09-28T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:semantic-mediawiki:semantic_mediawiki:*:*:*:*:*:mediawiki:*:*","versionStartIncluding":"3.1.0","versionEndExcluding":"7.3.1"}]}]}],"credits":[{"lang":"en","value":"AlpetGexha","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}