{"action":"Upgrade css_parser to 3.0.0 or later.","affected":[{"fixed":"3.0.0","introduced":"0"}],"component":"css_parser","cve_ids":["CVE-2026-53727"],"ecosystem":"RubyGems","epss":0.00506,"exploited":false,"fixed_versions":["3.0.0"],"ghsa_id":"GHSA-9pmc-p236-855h","id":"tcs_01M5KEJF2N1F6TWFGDHH27BT1H","modified_at":"2026-07-09T14:11:38.811463Z","published_at":"2026-07-09T13:43:13Z","references":["https://osv.dev/vulnerability/GHSA-9pmc-p236-855h","https://github.com/premailer/css_parser/security/advisories/GHSA-9pmc-p236-855h","https://github.com/premailer/css_parser","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/css_parser/CVE-2026-53727.yml","https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-53727"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"GHSA-9pmc-p236-855h","url":"https://osv.dev/vulnerability/GHSA-9pmc-p236-855h"},{"source":"nvd","source_id":"CVE-2026-53727","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53727"}],"summary":"Ruby CSS Parser: SSRF and Local File Disclosure in `CssParser::Parser#read_remote_file`"}