Description
omniauth-auth0 (rubygems) versions >= 2.3.0 and < 2.4.1 improperly validate the JWT token signature when using the `jwt_validator.verify` method. Improper validation of the JWT token signature can allow an attacker to bypass authentication and authorization. You are affected by this vulnerability if all of the following conditions apply: 1. You are using `omniauth-auth0`. 2. You are using `JWTValidator.verify` method directly OR you are not authenticating using the SDK’s default Authorization Code Flow. The issue is patched in version 2.4.1.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/auth0/omniauth-auth0/security/advisories/GHSA-58r4-h6v8-jcvm
Patch, Third Party Advisory x_refsource_misc
https://github.com/auth0/omniauth-auth0/commit/fd3a14f4ccdfbc515d1121d6378ff88bf55a7a7a
Product, Vendor Advisory x_refsource_misc
https://rubygems.org/gems/omniauth-auth0
Scores
CVSS v3
7.4
EPSS
0.0009
EPSS Percentile
24.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-287
CWE-347
Status
published
Products (2)
auth0/omniauth-auth0
2.3.0 - 2.4.1
rubygems/omniauth-auth0
2.3.0 - 2.4.1RubyGems
Published
Oct 21, 2020
Tracked Since
Feb 18, 2026