{"action":"Upgrade mediawiki/maps to 12.1.3 or later.","affected":[{"fixed":"12.1.3","introduced":"0"}],"component":"mediawiki/maps","cve_ids":["CVE-2026-52854"],"ecosystem":"Packagist","epss":0.00578,"exploited":false,"fixed_versions":["12.1.3"],"ghsa_id":"GHSA-4h7g-5542-v3fc","id":"tcs_01M5KEV07QFABAN17GC0BRD16X","modified_at":"2026-09-10T03:51:10.324148959Z","published_at":"2026-07-02T17:51:24Z","references":["https://osv.dev/vulnerability/GHSA-4h7g-5542-v3fc","https://github.com/ProfessionalWiki/Maps/security/advisories/GHSA-4h7g-5542-v3fc","https://github.com/ProfessionalWiki/Maps"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"GHSA-4h7g-5542-v3fc","url":"https://osv.dev/vulnerability/GHSA-4h7g-5542-v3fc"}],"summary":"mediawiki/maps has stored XSS through the overlays parameter in the display_map parser function"}