{"action":"Upgrade clearance to 2.5.0 or later.","affected":[{"fixed":"2.5.0","introduced":"0"}],"component":"clearance","cve_ids":["CVE-2021-23435"],"ecosystem":"RubyGems","epss":0.00703,"exploited":false,"fixed_versions":["2.5.0"],"ghsa_id":"GHSA-4hpq-rjcx-7vj9","id":"tcs_01M5KEGMN55XR16SJWTRQ1Y6CQ","modified_at":"2026-07-08T06:49:52.790771388Z","published_at":"2021-09-13T20:05:09Z","references":["https://osv.dev/vulnerability/GHSA-4hpq-rjcx-7vj9","https://nvd.nist.gov/vuln/detail/CVE-2021-23435","https://github.com/thoughtbot/clearance/pull/945","https://github.com/advisories/GHSA-4hpq-rjcx-7vj9","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/clearance/CVE-2021-23435.yml","https://github.com/thoughtbot/clearance","https://snyk.io/vuln/SNYK-RUBY-CLEARANCE-1577284"],"severity":{"label":"high","score":7.6},"sources":[{"source":"osv","source_id":"GHSA-4hpq-rjcx-7vj9","url":"https://osv.dev/vulnerability/GHSA-4hpq-rjcx-7vj9"}],"summary":"Clearance Gem Open Redirect Vulnerability"}