cvedb.io
CVE-2022-39227
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2022-09-23T07:15:09.300 · Last modified 2026-06-17T04:57:57.283

Summary

python-jwt is a module for generating and verifying JSON Web Tokens. Versions prior to 3.3.4 are subject to Authentication Bypass by Spoofing, resulting in identity spoofing, session hijacking or authentication bypass. An attacker who obtains a JWT can arbitrarily forge its contents without knowing the secret key. Depending on the application, this may for example enable the attacker to spoof other user's identities, hijack their sessions, or bypass authentication. Users should upgrade to version 3.3.4. There are no known workarounds.

Affected products

python-jwt_project — python-jwt

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.