9.8

CVE-2019-7644: auth0 auth0-wcf-service-jwt

CVSS: 9.8v3.0CriticalModified
AliasesGHSA-qpvx-gpqm-g98j
Published 11-04-2019Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2019-7644 is a critical (CVSS 9.8) vulnerability in auth0 auth0-wcf-service-jwt. EPSS estimates a 1.71% chance of exploitation in the next 30 days, higher than 76.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.0 (NVD)
EPSS score
1.71%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-04-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.71%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

0.00 pp

From 1.71% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.71%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Auth01 product
NuGet1 product
  • Auth0-WCF-Service-JWT< 1.0.4

2 vendors · 2 products

References

3 links