Keycloak Insufficient Session Expiry

published 2020-05-11 6 y ago modified 2026-06-17 4 mo ago also GHSA-8xj2-47xw-q78c , EUVD-2022-3258

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits: 0; none known

A flaw was found in Keycloak in versions before 9.0.2. This flaw allows a malicious user that is currently logged in, to see the personal information of a previously logged out user in the account manager section.

Patch / fix

fixed in 2 distros 1

maven org.keycloak:keycloak-core 9.0.2
redhat keycloak 9.0.2

rh-sso7-keycloak red hat single sign on 7 4.8.20-1.Final_redhat_00001.1.el8sso
rh-sso7-keycloak-server red hat single sign on 7 4.8.20-1.Final_redhat_00001.1.el8sso
rh-sso7-keycloak red hat single sign on 7 4.8.20-1.Final_redhat_00001.1.el7sso
rh-sso7-keycloak-server red hat single sign on 7 4.8.20-1.Final_redhat_00001.1.el7sso
rh-sso7-keycloak red hat single sign on 7 4.8.20-1.Final_redhat_00001.1.el6sso
rh-sso7-keycloak-server red hat single sign on 7 4.8.20-1.Final_redhat_00001.1.el6sso

red hat advisories RHSA-2020:2108 RHSA-2020:2107 RHSA-2020:2106

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-2020-1724 updated 2026-11-07 cvss 4.3

keycloak: problem with privacy after user logout

Red Hat OpenShift Application Runtimes keycloak keycloak
affected: no fix available
Red Hat Runtimes Spring Boot 2.2.6
fixed: vendor fix RHSA-2020:2252
Red Hat Single Sign On 7.3.8
fixed: vendor fix RHSA-2020:2112
Red Hat Single Sign-On 7.3 for RHEL 6 Server rh-sso7-keycloak 4.8.20-1.Final_redhat_00001.1.el6sso, rh-sso7-keycloak-server 4.8.20-1.Final_redhat_00001.1.el6sso
fixed: vendor fix RHSA-2020:2106
Red Hat Single Sign-On 7.3 for RHEL 7 Server rh-sso7-keycloak 4.8.20-1.Final_redhat_00001.1.el7sso, rh-sso7-keycloak-server 4.8.20-1.Final_redhat_00001.1.el7sso
fixed: vendor fix RHSA-2020:2107
Red Hat Single Sign-On 7.3 for RHEL 8 rh-sso7-keycloak 4.8.20-1.Final_redhat_00001.1.el8sso, rh-sso7-keycloak-server 4.8.20-1.Final_redhat_00001.1.el8sso
fixed: vendor fix RHSA-2020:2108
Red Hat Text-Only RHOAR
fixed: vendor fix RHSA-2020:2905
Red Hat Decision Manager 7 keycloak keycloak Red Hat Fuse 7 keycloak keycloak Red Hat Process Automation 7 keycloak keycloak
not affected: vulnerable code not present

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

0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.keycloak:keycloak-core	<9.0.2	9.0.2

Affected products

Red Hat keycloak

Classification

Weakness

CWE-613 DEPRECATED: Insufficient Session Expiration

References

bugzilla.redhat.com /show_bug.cgi?id=CVE-2020-1724
web, issue-tracking, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2020-1724
advisory
github.com /keycloak/keycloak
package

Sources

CVE List CVE-2020-1724
GitHub Advisory GHSA-8xj2-47xw-q78c
NVD CVE-2020-1724

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