What is CVE-2018-14637?

CVE-2018-14637 is a medium-severity vulnerability in [Unknown] Keycloak, classified under Improper Authorization. CVSS score: 6.1/10. Published 2018-11-30.

How severe is CVE-2018-14637?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Auth bypass in [Unknown] Keycloak

CVE-2018-14637

The SAML broker consumer endpoint in Keycloak before version 4.6.0.Final ignores expiration conditions on SAML assertions. An attacker can exploit this vulnerability to perform a replay attack.

Published 2018-11-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.5th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

[Unknown] Keycloak — versions 4.6.0.Final
Red Hat Keycloak

Weakness classification (CWE)

References

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

Frequently asked questions

What is CVE-2018-14637?: CVE-2018-14637 is a medium-severity vulnerability in [Unknown] Keycloak, classified under Improper Authorization. CVSS score: 6.1/10. Published 2018-11-30.
How severe is CVE-2018-14637?: Medium severity. CVSS v3 base score is 6.1 out of 10.