{"action":"Upgrade mediawiki to 1:1.35.2-1 or later.","affected":[{"fixed":"1:1.35.2-1","introduced":"0"}],"component":"mediawiki","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:1.35.2-1"],"id":"tcs_01M5NFK03K2A6BQ6JNDP6X4BWN","modified_at":"2026-10-23T18:02:52.089579377Z","published_at":"2021-04-06T07:15:12.357Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-30154","https://security-tracker.debian.org/tracker/CVE-2021-30154"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-30154#Debian:13/mediawiki","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-30154"}],"summary":"An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On Special:NewFiles, all the mediastatistics-header-* messages are output in HTML unescaped, leading to XSS"}