CVE-2022-39227

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.

• CWE-290

• https://github.com/davedoesdev/python-jwt/commit/88ad9e67c53aa5f7c43ec4aa52ed34b7930068c9Patch
• https://github.com/davedoesdev/python-jwt/security/advisories/GHSA-5p8v-58qm-c7fpPatch, Third Party Advisory
• https://github.com/pypa/advisory-database/blob/main/vulns/python-jwt/PYSEC-2022-259.yamlThird Party Advisory
• https://www.vicarius.io/vsociety/posts/authentication-bypass-in-python-jwt
• https://github.com/davedoesdev/python-jwt/commit/88ad9e67c53aa5f7c43ec4aa52ed34b7930068c9Patch
• https://github.com/davedoesdev/python-jwt/security/advisories/GHSA-5p8v-58qm-c7fpPatch, Third Party Advisory
• https://github.com/pypa/advisory-database/blob/main/vulns/python-jwt/PYSEC-2022-259.yamlThird Party Advisory
• https://www.vicarius.io/vsociety/posts/authentication-bypass-in-python-jwt

Published

Sep 23, 2022

Last Modified

Jun 17, 2026

Status

Modified