SEPTEMBER 18, 2026
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Case File

CVE-2019-7644

CRITICAL · CVSS 9.8 EPSS 1.66%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-04-11 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2019-7644
Severity
CRITICAL
CVSS
9.8
EPSS
1.66%

Original NVD 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.

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