← Vulnerability feed

Vulnerability record · CVE-2022-39227 · published 23 September 2022

CVE-2022-39227: Python-jwt project python-jwt authentication bypass by spoofing vulnerability

PPython Jwt Project · Python Jwt

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.

9.1 CVSS 3.1 Critical EPSS 5.3% · top 7.7% CWE-290 · Authentication bypass by spoofing
9.1CVSS 3.1 base score
5.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/davedoesdev/python-jwt/commit/88ad9e67c53aa5f7c43ec4aa52ed34b7930068c9 Patch
https://github.com/davedoesdev/python-jwt/security/advisories/GHSA-5p8v-58qm-c7fp PatchThird Party Advisory
https://github.com/pypa/advisory-database/blob/main/vulns/python-jwt/PYSEC-2022-259.yaml Third Party Advisory
https://www.vicarius.io/vsociety/posts/authentication-bypass-in-python-jwt
https://github.com/davedoesdev/python-jwt/commit/88ad9e67c53aa5f7c43ec4aa52ed34b7930068c9 Patch
https://github.com/davedoesdev/python-jwt/security/advisories/GHSA-5p8v-58qm-c7fp PatchThird Party Advisory
https://github.com/pypa/advisory-database/blob/main/vulns/python-jwt/PYSEC-2022-259.yaml Third Party Advisory
https://www.vicarius.io/vsociety/posts/authentication-bypass-in-python-jwt

Track CVE-2022-39227 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.5CVE-2023-50224TP-Link router httpd authentication bypass exposes stored credentialsThe httpd service on affected TP-Link router firmware contains an improper authentication flaw (CWE-290) that lets a network-adjacent attacker bypass…KEVEPSS 16%analysed10.0CVE-2024-54085AMI MegaRAC SPx BMC authentication bypass via Redfish Host InterfaceAMI's SPx BMC implementation contains an authentication bypass reachable remotely through the Redfish Host Interface, classified as CWE-290 (authenti…KEVEPSS 61%analysed9.8CVE-2024-4358Progress Telerik Report Server authentication bypass via spoofingTelerik Report Server 2024 Q1 (10.0.24.305) and earlier on IIS contains an authentication bypass by spoofing (CWE-290). An unauthenticated remote att…KEVEPSS 97%analysed9.8CVE-2022-24112Apache APISIX batch-requests plugin auth bypass enables RCEThe batch-requests plugin in Apache APISIX can be abused to bypass the Admin API IP restriction because a code bug defeats the check that overrides t…KEVEPSS 96%analysed9.8CVE-2022-23131Zabbix Frontend SAML SSO authentication bypass via session spoofingZabbix Frontend fails to verify the user login stored in the session when SAML SSO authentication is enabled, allowing session data to be modified. A…KEVEPSS 96%analysed

Source: NIST National Vulnerability Database (record CVE-2022-39227), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.