{"schema_version":1,"title":"Authlib Joserfc vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Authlib Joserfc: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-75509, was published on 24 August 2026.","url":"https://junglewise.ai/threats/technologies/joserfc","json_url":"https://junglewise.ai/threats/technologies/joserfc.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/joserfc","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":1,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":3,"last_365_days":4},"latest":[{"cve":"CVE-2026-75509","cvss":6.5,"epss":0.0012,"slug":"cve-2026-75509-authlib-joserfc-issuer-validation-bypass-in-jwt-claims","title":"authlib joserfc issuer validation bypass in JWT claims","severity":"medium","exploited":false,"published_at":"2026-08-24T20:17:19.183+00:00","url":"https://junglewise.ai/threats/cve-2026-75509-authlib-joserfc-issuer-validation-bypass-in-jwt-claims"},{"cve":"CVE-2026-62995","cvss":2.3,"slug":"cve-2026-62995-authlib-joserfc-token-malleability-via-trailing-padding","title":"authlib joserfc token malleability via trailing padding","severity":"info","exploited":false,"published_at":"2026-07-29T19:16:50.837+00:00","url":"https://junglewise.ai/threats/cve-2026-62995-authlib-joserfc-token-malleability-via-trailing-padding"},{"cve":"CVE-2026-49852","cvss":4,"epss":0.0019,"slug":"cve-2026-49852-authlib-joserfc-authentication-bypass-via-empty-hmac-key","title":"authlib joserfc authentication bypass via empty HMAC key","severity":"high","exploited":false,"published_at":"2026-07-17T20:17:23.27+00:00","url":"https://junglewise.ai/threats/cve-2026-49852-authlib-joserfc-authentication-bypass-via-empty-hmac-key"},{"cve":"CVE-2026-48990","cvss":5.3,"epss":0.0027,"slug":"cve-2026-48990-authlib-joserfc-resource-exhaustion-via-oversized-rfc7797","title":"authlib joserfc resource exhaustion via oversized RFC7797 payloads","severity":"medium","exploited":false,"published_at":"2026-06-17T22:16:23.27+00:00","url":"https://junglewise.ai/threats/cve-2026-48990-authlib-joserfc-resource-exhaustion-via-oversized-rfc7797"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Authlib Joserfc","slug":"joserfc","vendor":{"name":"Authlib","slug":"authlib","url":"https://junglewise.ai/threats/vendors/authlib"},"aliases":[],"category":"library","homepage":"https://joserfc.authlib.org/","repo_url":"https://github.com/authlib/joserfc","description":"A Python implementation of JOSE (JSON Object Signing and Encryption) including JWS, JWE, JWK, and JWA.","url":"https://junglewise.ai/threats/technologies/joserfc"},"most_severe":[{"cve":"CVE-2026-49852","cvss":4,"epss":0.0019,"slug":"cve-2026-49852-authlib-joserfc-authentication-bypass-via-empty-hmac-key","title":"authlib joserfc authentication bypass via empty HMAC key","severity":"high","exploited":false,"published_at":"2026-07-17T20:17:23.27+00:00","url":"https://junglewise.ai/threats/cve-2026-49852-authlib-joserfc-authentication-bypass-via-empty-hmac-key"},{"cve":"CVE-2026-75509","cvss":6.5,"epss":0.0012,"slug":"cve-2026-75509-authlib-joserfc-issuer-validation-bypass-in-jwt-claims","title":"authlib joserfc issuer validation bypass in JWT claims","severity":"medium","exploited":false,"published_at":"2026-08-24T20:17:19.183+00:00","url":"https://junglewise.ai/threats/cve-2026-75509-authlib-joserfc-issuer-validation-bypass-in-jwt-claims"},{"cve":"CVE-2026-48990","cvss":5.3,"epss":0.0027,"slug":"cve-2026-48990-authlib-joserfc-resource-exhaustion-via-oversized-rfc7797","title":"authlib joserfc resource exhaustion via oversized RFC7797 payloads","severity":"medium","exploited":false,"published_at":"2026-06-17T22:16:23.27+00:00","url":"https://junglewise.ai/threats/cve-2026-48990-authlib-joserfc-resource-exhaustion-via-oversized-rfc7797"},{"cve":"CVE-2026-62995","cvss":2.3,"slug":"cve-2026-62995-authlib-joserfc-token-malleability-via-trailing-padding","title":"authlib joserfc token malleability via trailing padding","severity":"info","exploited":false,"published_at":"2026-07-29T19:16:50.837+00:00","url":"https://junglewise.ai/threats/cve-2026-62995-authlib-joserfc-token-malleability-via-trailing-padding"}],"generated_at":"2026-09-26T12:07:00.15149+00:00"}