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Fencer Intel
medium 4.3

CVE-2020-1724 json

Keycloak Insufficient Session Expiry

published 6y ago modified 4mo 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

Summary

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

  • 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-2020:2108RHSA-2020:2107RHSA-2020:2106

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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 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, 2026-11-09).

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

Sources

Fencer Intel 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.