CVE-2026-101918

Published 28 September 2026 · tracked since 29 September 2026

Description

PyJWT is a Python implementation of JSON Web Token standards. From 2.0.0a1 until 2.15.0, PyJWT PyJWKClient.get_signing_key_from_jwt is affected because payload parser catches ValueError but not RecursionError. This occurs when an attacker-controlled recursively nested payload reaches json.loads. As

References

• NVD — National Vulnerability Database
• CVE.org record (MITRE)
• CISA Known Exploited Vulnerabilities catalog

Latest tracked vulnerabilities

• CVE-2026-102265 MEDIUM 5.3
• CVE-2026-102266 HIGH 7.4
• CVE-2026-102267 HIGH 7.4
• CVE-2026-102268 CRITICAL 9.1
• CVE-2026-102269 MEDIUM 4.8
• CVE-2026-101917 MEDIUM 5.3
• CVE-2026-100371
• CVE-2026-100370 MEDIUM 4.7
• CVE-2026-86950 HIGH 8.8
• CVE-2026-87741 HIGH 8.8

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