{"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:12","exploited":false,"fixed_versions":["1:1.35.2-1"],"id":"tcs_01M5NFGPPDJNMG4ZZBSAK42PAY","modified_at":"2026-10-23T18:03:25.982336938Z","published_at":"2021-03-17T13:15:15.137Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-27291","https://security-tracker.debian.org/tracker/CVE-2021-27291"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-27291","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-27291"}],"summary":"In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity an"}