{"action":"Upgrade sisimai to 4.25.14p12 or later.","affected":[{"fixed":"4.25.14p12","introduced":"0"}],"component":"sisimai","cve_ids":["CVE-2022-4891"],"ecosystem":"RubyGems","epss":0.01386,"exploited":false,"fixed_versions":["4.25.14p12"],"ghsa_id":"GHSA-vm74-j4wq-82xj","id":"tcs_01M5KENK3A40E0X6D0P7XH9JKJ","modified_at":"2026-02-22T23:09:38.471873Z","published_at":"2023-01-17T21:30:22Z","references":["https://osv.dev/vulnerability/GHSA-vm74-j4wq-82xj","https://nvd.nist.gov/vuln/detail/CVE-2022-4891","https://github.com/sisimai/rb-sisimai/pull/244","https://github.com/sisimai/rb-sisimai/commit/51fe2e6521c9c02b421b383943dc9e4bbbe65d4e","https://gist.githubusercontent.com/gmcabrita/e5dc0332473fc2e3a7a407434c8d21c7/raw/00b12035e5e1b685469f143b94301a50306376ba/example.html","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sisimai/CVE-2022-4891.yml","https://github.com/sisimai/rb-sisimai","https://github.com/sisimai/rb-sisimai/releases/tag/v4.25.14p12","https://vuldb.com/?ctiid.218452","https://vuldb.com/?id.218452"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-vm74-j4wq-82xj","url":"https://osv.dev/vulnerability/GHSA-vm74-j4wq-82xj"}],"summary":"Sisimai Inefficient Regular Expression Complexity vulnerability"}