PyPI/pyjwt CVE-2026-101918: medium 5.3, EPSS 0.36%

PyJWT: Unauthenticated RecursionError DoS in pre-verification payload parse (PyJWKClient.get_signing_key_from_jwt / verify_signature=False)

Action: Upgrade pyjwt to 2.15.0 or later.

pip install pyjwt==2.15.0

Affected

Fixed versions

Sources

• osv: GHSA-42vr-xj54-vc7v
• https://github.com/jpadilla/pyjwt/security/advisories/GHSA-42vr-xj54-vc7v
• https://nvd.nist.gov/vuln/detail/CVE-2026-101918
• https://github.com/jpadilla/pyjwt/commit/5fde08a6cf906aa7698de2d6391d88b73006b17b
• https://github.com/jpadilla/pyjwt
• https://github.com/jpadilla/pyjwt/releases/tag/2.15.0

CVE-2026-101918 · published 2026-09-30T15:41:05Z · modified 2026-10-01T17:56:09.538835697Z · JSON