{"schema_version":1,"title":"PyJWT vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 7 vulnerabilities in PyJWT: 0 in the last 7 days and 7 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, PyJWT HS256/384/512 token forgery via empty HMAC key in oct JWK, was published on 22 October 2026. 1 vulnerability in the last four weeks, down 83% on the four before (6).","url":"https://junglewise.ai/threats/technologies/pyjwt-pyjwt","json_url":"https://junglewise.ai/threats/technologies/pyjwt-pyjwt.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/pyjwt-pyjwt","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":false,"counts":{"high":3,"all_time":7,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":7,"last_365_days":7},"latest":[{"cvss":7.4,"slug":"pyjwt-hs256-384-512-verify-accepts-empty-hmac-key-via-oct-jwk-pyjwk-a3ba63d2","title":"PyJWT HS256/384/512 token forgery via empty HMAC key in oct JWK","severity":"high","exploited":false,"published_at":"2026-10-22T15:48:04+00:00","url":"https://junglewise.ai/threats/pyjwt-hs256-384-512-verify-accepts-empty-hmac-key-via-oct-jwk-pyjwk-a3ba63d2"},{"cve":"CVE-2026-102275","cvss":6.5,"epss":0.0014,"slug":"cve-2026-102275-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT OKP algorithm key validation bypass","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:15.857+00:00","url":"https://junglewise.ai/threats/cve-2026-102275-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-102274","cvss":5.9,"epss":0.0035,"slug":"cve-2026-102274-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT unhandled ValueError in JWK Set parsing","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:15.677+00:00","url":"https://junglewise.ai/threats/cve-2026-102274-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-102273","cvss":7.4,"epss":0.0018,"slug":"cve-2026-102273-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT HMAC key validation bypass in HMACAlgorithm.prepare_key","severity":"high","exploited":false,"published_at":"2026-09-28T21:17:15.497+00:00","url":"https://junglewise.ai/threats/cve-2026-102273-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-102267","cvss":7.4,"epss":0.0016,"slug":"cve-2026-102267-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT open redirect in PyJWKClient JWKS fetches","severity":"high","exploited":false,"published_at":"2026-09-28T21:17:14.43+00:00","url":"https://junglewise.ai/threats/cve-2026-102267-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-102265","cvss":5.3,"epss":0.0029,"slug":"cve-2026-102265-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT denial of service via deeply nested token headers","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:14.077+00:00","url":"https://junglewise.ai/threats/cve-2026-102265-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-101918","cvss":5.3,"epss":0.0029,"slug":"cve-2026-101918-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT recursion error denial of service","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:13.41+00:00","url":"https://junglewise.ai/threats/cve-2026-101918-pyjwt-is-a-python-implementation-of-json-web-token-standards"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"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},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":6},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"PyJWT","slug":"pyjwt-pyjwt","vendor":{"hub":true,"name":"PyJWT","slug":"pyjwt","url":"https://junglewise.ai/threats/vendors/pyjwt"},"aliases":[],"category":"library","description":"Python library for encoding and decoding JSON Web Tokens.","url":"https://junglewise.ai/threats/technologies/pyjwt-pyjwt"},"most_severe":[{"cve":"CVE-2026-102273","cvss":7.4,"epss":0.0018,"slug":"cve-2026-102273-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT HMAC key validation bypass in HMACAlgorithm.prepare_key","severity":"high","exploited":false,"published_at":"2026-09-28T21:17:15.497+00:00","url":"https://junglewise.ai/threats/cve-2026-102273-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-102267","cvss":7.4,"epss":0.0016,"slug":"cve-2026-102267-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT open redirect in PyJWKClient JWKS fetches","severity":"high","exploited":false,"published_at":"2026-09-28T21:17:14.43+00:00","url":"https://junglewise.ai/threats/cve-2026-102267-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cvss":7.4,"slug":"pyjwt-hs256-384-512-verify-accepts-empty-hmac-key-via-oct-jwk-pyjwk-a3ba63d2","title":"PyJWT HS256/384/512 token forgery via empty HMAC key in oct JWK","severity":"high","exploited":false,"published_at":"2026-10-22T15:48:04+00:00","url":"https://junglewise.ai/threats/pyjwt-hs256-384-512-verify-accepts-empty-hmac-key-via-oct-jwk-pyjwk-a3ba63d2"},{"cve":"CVE-2026-102275","cvss":6.5,"epss":0.0014,"slug":"cve-2026-102275-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT OKP algorithm key validation bypass","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:15.857+00:00","url":"https://junglewise.ai/threats/cve-2026-102275-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-102274","cvss":5.9,"epss":0.0035,"slug":"cve-2026-102274-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT unhandled ValueError in JWK Set parsing","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:15.677+00:00","url":"https://junglewise.ai/threats/cve-2026-102274-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-102265","cvss":5.3,"epss":0.0029,"slug":"cve-2026-102265-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT denial of service via deeply nested token headers","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:14.077+00:00","url":"https://junglewise.ai/threats/cve-2026-102265-pyjwt-is-a-python-implementation-of-json-web-token-standards"},{"cve":"CVE-2026-101918","cvss":5.3,"epss":0.0029,"slug":"cve-2026-101918-pyjwt-is-a-python-implementation-of-json-web-token-standards","title":"PyJWT recursion error denial of service","severity":"medium","exploited":false,"published_at":"2026-09-28T21:17:13.41+00:00","url":"https://junglewise.ai/threats/cve-2026-101918-pyjwt-is-a-python-implementation-of-json-web-token-standards"}],"generated_at":"2026-11-09T03:07:00.176479+00:00"}