{"id":"CVE-2020-36255","aliases":["EUVD-2020-23798","GHSA-5wq9-489q-pp4g"],"status":"published","title":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca...","description":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01532,"percentile":0.74968,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-03-05T02:06:10Z","modified":"2026-11-10T02:30:37Z","products":[{"vendor":"identitymodel_project","product":"identitymodel"}],"references":[{"url":"https://github.com/scottbrady91/IdentityModel/issues/4","tags":["x_refsource_MISC","x_transferred","Broken Link","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/scottbrady91/IdentityModel/issues/3","tags":["x_refsource_MISC","x_transferred","Broken Link","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/scottbrady91/IdentityModel/compare/1.2.0...1.3.0","tags":["x_refsource_MISC","x_transferred","Patch","Release Notes","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36255"},{"url":"https://github.com/advisories/GHSA-5wq9-489q-pp4g"}],"sources":{"cve":[{"id":"CVE-2020-36255","description":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.","status":"published","published":"2021-03-05T02:06:10Z","modified":"2024-08-04T17:23:09.872Z","updated_at":"2026-11-02T14:35:55.128961Z"}],"euvd":[{"id":"EUVD-2020-23798","description":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.","status":"published","published":"2021-03-05T02:06:10Z","modified":"2024-08-04T17:23:09Z","updated_at":"2026-11-03T03:07:04.065361Z"}],"ghsa":[{"id":"GHSA-5wq9-489q-pp4g","title":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca...","description":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.","status":"published","published":"2022-05-24T17:43:44Z","modified":"2023-01-29T05:06:45Z","updated_at":"2026-11-02T14:46:05.419939Z"}],"nvd":[{"id":"CVE-2020-36255","description":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.","status":"published","published":"2021-03-05T03:15:12.51Z","modified":"2026-06-17T03:15:13.467Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:37.687844Z"}],"osv":[{"id":"CVE-2020-36255","description":"An issue was discovered in IdentityModel (aka ScottBrady.IdentityModel) before 1.3.0. The Branca implementation allows an attacker to modify and forge authentication tokens.","status":"published","published":"2021-03-05T03:15:12.51Z","modified":"2026-11-10T02:30:37.145433586Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-10T02:45:53.470331Z"}]}}