CVE-2026-102271

Published 28 September 2026 · tracked since 29 September 2026

Description

PyJWT is a Python implementation of JSON Web Token standards. From 2.4.0 until 2.14.0, PyJWT HMACAlgorithm.prepare_key is affected because asymmetric-key guard relies on textual markers that are absent from DER encoding. This occurs when an application mixes HMAC and asymmetric algorithms and suppli

References

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

Latest tracked vulnerabilities

• CVE-2026-102264 LOW 3.5
• CVE-2026-102263 MEDIUM 4.7
• CVE-2026-102414 LOW 3.7
• CVE-2026-102422 HIGH 8.1
• CVE-2026-102247 MEDIUM 6.8
• CVE-2026-96326 HIGH 7.2
• CVE-2026-101858 MEDIUM 4.7
• CVE-2026-101859 MEDIUM 5.4
• CVE-2026-101860 HIGH 8.8
• CVE-2026-101280 HIGH 7.3

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