{"api_version":"1","generated_at":"2026-07-24T17:19:28+00:00","cve":"CVE-2020-36255","urls":{"html":"https://cve.report/CVE-2020-36255","api":"https://cve.report/api/cve/CVE-2020-36255.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-36255","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-36255"},"summary":{"title":"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.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-03-05 03:15:00","updated_at":"2021-03-11 17:59:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://github.com/scottbrady91/IdentityModel/issues/3","name":"https://github.com/scottbrady91/IdentityModel/issues/3","refsource":"MISC","tags":["Broken Link","Issue Tracking","Third Party Advisory"],"title":"Poly1305 key misuse - attackers can forge authenticated tokens · Issue #3 · scottbrady91/IdentityModel · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/scottbrady91/IdentityModel/compare/1.2.0...1.3.0","name":"https://github.com/scottbrady91/IdentityModel/compare/1.2.0...1.3.0","refsource":"MISC","tags":["Patch","Release Notes","Third Party Advisory"],"title":"Comparing 1.2.0...1.3.0 · scottbrady91/IdentityModel · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/scottbrady91/IdentityModel/issues/4","name":"https://github.com/scottbrady91/IdentityModel/issues/4","refsource":"MISC","tags":["Broken Link","Issue Tracking","Third Party Advisory"],"title":"Unauthenticated ciphertext - attackers can modify tokens · Issue #4 · scottbrady91/IdentityModel · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-36255","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36255","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"36255","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"identitymodel_project","cpe5":"identitymodel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"36255","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"identitymodel_project","cpe5":"identitymodel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-36255","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://github.com/scottbrady91/IdentityModel/issues/4","refsource":"MISC","name":"https://github.com/scottbrady91/IdentityModel/issues/4"},{"url":"https://github.com/scottbrady91/IdentityModel/issues/3","refsource":"MISC","name":"https://github.com/scottbrady91/IdentityModel/issues/3"},{"url":"https://github.com/scottbrady91/IdentityModel/compare/1.2.0...1.3.0","refsource":"MISC","name":"https://github.com/scottbrady91/IdentityModel/compare/1.2.0...1.3.0"}]}},"nvd":{"publishedDate":"2021-03-05 03:15:00","lastModifiedDate":"2021-03-11 17:59:00","problem_types":["NVD-CWE-noinfo"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:N","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:identitymodel_project:identitymodel:*:*:*:*:*:*:*:*","versionEndExcluding":"1.3.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"36255","Ordinal":"203083","Title":"CVE-2020-36255","CVE":"CVE-2020-36255","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"36255","Ordinal":"1","NoteData":"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.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"36255","Ordinal":"2","NoteData":"2021-03-04","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"36255","Ordinal":"3","NoteData":"2021-03-04","Type":"Other","Title":"Modified"}]}}}