{"id":"GHSA-59xw-qv23-j3rc","aliases":["CVE-2026-77608"],"title":"Semantic MediaWiki has reflected XSS in `Special:SearchByProperty` (`property` and `value` parameters)","description":"#### Failure mode\n\nThe `value` parameter was reflected back into rendered output and error messaging paths without enough output-context encoding.\n\n#### Remediation\n\n- The form value is escaped before it is placed back into the input field.\n- Derived error messages are also escaped before being rendered into HTML.\n\n#### Maintenance note\n\nDo not treat error text as trusted just because it originated from validation. Validation output can still be attacker-influenced.","severity":"medium","score":6.1,"published":"2026-09-18T16:42:50.000Z","modified":"2026-09-18T17:00:04.976Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"mediawiki/semantic-media-wiki","ranges":[{"events":[{"introduced":"0"},{"fixed":"7.2.0"}],"type":"ECOSYSTEM"}],"versions":["1.9","1.9-RC1","1.9.0.1","1.9.0.2","1.9.1","1.9.1.1","1.9.2","1.9beta1","2.0","2.0-RC1","2.0-RC2","2.0-RC3","2.1.0","2.1.0-RC1","2.1.1","2.1.2","2.1.3","2.2.0","2.2.0-RC1","2.2.1","2.2.2","2.2.3","2.3.0","2.3.0-RC1","2.3.1","2.4.0","2.4.0-RC1","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.5.0","2.5.0-rc.1","2.5.1","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","3.0.0","3.0.0-rc.1","3.0.0-rc.2","3.0.1","3.0.2","3.1.0","3.1.0-rc.1","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.2.0","3.2.0-rc.1","3.2.0-rc.2","3.2.1","3.2.2","3.2.3","4.0.0","4.0.1","4.0.2","4.1.0","4.1.1","4.1.2","4.1.3","4.2.0","5.0.0","5.0.1","5.0.2","5.1.0","6.0.0","6.0.1","7.0.0","7.1.0"],"fixed":["7.2.0"]}],"references":["https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-59xw-qv23-j3rc","https://github.com/SemanticMediaWiki/SemanticMediaWiki","https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0"],"sources":[{"name":"OSV","id":"GHSA-59xw-qv23-j3rc","modified":"2026-09-18T17:00:04.976756852Z","url":"https://osv.dev/vulnerability/GHSA-59xw-qv23-j3rc"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1}]}