OIDC Logout redirect in keycloak

published 2021-02-11 5 y ago modified 2026-06-17 4 mo ago also GHSA-rvjg-gxwx-j5gf , EUVD-2022-1828

cvss: 3.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits: 0; none known

A vulnerability was found in keycloak in the way that the OIDC logout endpoint does not have CSRF protection. Versions shipped with Red Hat Fuse 7, Red Hat Single Sign-on 7, and Red Hat Openshift Application Runtimes are believed to be vulnerable.

Patch / fix

fixed in 1 distros 1

maven org.keycloak:keycloak-oidc-client-adapter-pom 18.0.0

keycloak Arch Linux 16.0.0-1

arch linux advisories AVG-1332

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-10734 updated 2026-11-06 cvss 3.3

keycloak: OIDC logout endpoint CSRF

Red Hat Fuse 7 keycloak keycloak
affected: no fix available “Fix deferred”
Red Hat OpenShift Application Runtimes keycloak keycloak Red Hat Single Sign-On 7 rh-sso7-keycloak rh-sso7-keycloak
affected: no fix available
Red Hat support for Spring Boot keycloak keycloak
affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:N/I:N/A:P
GitHub	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem	package	affected	fixed in
maven	org.keycloak:keycloak-oidc-client-adapter-pom	<18.0.0	18.0.0

Affected products

n/a keycloak

Classification

Weakness

CWE-352 Cross-Site Request Forgery
CWE-601 URL Redirection to Untrusted Site

References

bugzilla.redhat.com /show_bug.cgi?id=1831662
web, issue-tracking, vendor-advisory
issues.redhat.com /browse/KEYCLOAK-13653
web, permissions-required, vendor-advisory
github.com /keycloak/keycloak/security/advisories/GHSA-rvjg-gxwx-j5gf
web
nvd.nist.gov /vuln/detail/CVE-2020-10734
advisory
github.com /keycloak/keycloak
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary