{"action":"Upgrade jwt to 2.10.3 or later.","affected":[{"fixed":"3.2.0","introduced":"3.0.0"},{"fixed":"2.10.3","introduced":"0"}],"component":"jwt","cve_ids":["CVE-2026-45363"],"ecosystem":"RubyGems","epss":0.00364,"exploited":false,"fixed_versions":["3.2.0","2.10.3"],"ghsa_id":"GHSA-c32j-vqhx-rx3x","id":"tcs_01M5KEJK7Z67Q0JPSKJR7XDD24","modified_at":"2026-09-10T03:50:46.749617476Z","published_at":"2026-05-18T17:24:55Z","references":["https://osv.dev/vulnerability/GHSA-c32j-vqhx-rx3x","https://github.com/jwt/ruby-jwt/security/advisories/GHSA-c32j-vqhx-rx3x","https://github.com/jwt/ruby-jwt/issues/724","https://github.com/jwt/ruby-jwt/commit/db560b769a07bd9724e77ff505011ac01872106f","https://github.com/jwt/ruby-jwt","https://github.com/jwt/ruby-jwt/releases/tag/v2.10.3","https://github.com/jwt/ruby-jwt/releases/tag/v3.2.0","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/jwt/CVE-2026-45363.yml","https://www.cve.org/CVERecord?id=CVE-2026-45363"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-c32j-vqhx-rx3x","url":"https://osv.dev/vulnerability/GHSA-c32j-vqhx-rx3x"}],"summary":"ruby-jwt: Empty-key HMAC bypass; cross-language sibling of CVE-2026-44351"}