What is CVE-2020-1694?

CVE-2020-1694 is a medium-severity vulnerability in Red Hat Keycloak, classified under CWE-183. CVSS score: 4.9/10. Published 2020-09-16.

How severe is CVE-2020-1694?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Vulnerability in Red Hat Keycloak

CVE-2020-1694

A flaw was found in all versions of Keycloak before 10.0.0, where the NodeJS adapter did not support the verify-token-audience. This flaw results in some users having access to sensitive information outside of their permissions.

Published 2020-09-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.016 (75.5th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Red Hat Keycloak
Keycloak — versions all versions before 10.0.0

Weakness classification (CWE)

References

bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-1694?: CVE-2020-1694 is a medium-severity vulnerability in Red Hat Keycloak, classified under CWE-183. CVSS score: 4.9/10. Published 2020-09-16.
How severe is CVE-2020-1694?: Medium severity. CVSS v3 base score is 4.9 out of 10.