VULNERABILITY INTELLIGENCE

CVE-2019-7644

CVSS score9.8 CRITICAL
EPSS probability1.71%
CISA KEVNot currently listed
Published2019-04-11
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Auth0 Auth0-WCF-Service-JWT before 1.0.4 leaks the expected JWT signature in an error message when it cannot successfully validate the JWT signature. If this error message is presented to an attacker, they can forge an arbitrary JWT token that will be accepted by the vulnerable application.

Weakness classification

  • CWE-209: Generation of Error Message Containing Sensitive Information

Primary references