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CVE-2018-10894

19
FAUCET Score

CVE-2018-10894 describes a medium-severity vulnerability in Keycloak 3.4.3.Final, Red Hat Enterprise Linux, and Red Hat Single Sign-On, where SAML authentication incorrectly accepted expired certificates. This flaw could allow an authenticated attacker to gain unauthorized access to data or facilitate further attacks. The vulnerability has a CVSS score of 5.4, indicating a low attack complexity and the potential for limited confidentiality and integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.4.3CPE matchmatch criteria
cpe:2.3:a:redhat:keycloak:3.4.3:*:*:*:*:*:*:*
7.2CPE matchmatch criteria
cpe:2.3:a:redhat:single_sign-on:7.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 37th percentile among its peer group of 21,974 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

mavenpatch availablevia ghsa
Product: org.keycloak:keycloak-servicesFixed in: 4.4.0.Final
mavenpatch availablevia ghsa
Product: org.keycloak:keycloak-saml-adapter-coreFixed in: 4.4.0.Final
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.2.5 zipFixed in: server
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.2 for RHEL 7Fixed in: rh-sso7-keycloak-0:3.4.14-1.Final_redhat_00001.1.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Text-Only RHOAR
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.2 for RHEL 6Fixed in: rh-sso7-keycloak-0:3.4.14-1.Final_redhat_00001.1.jbcs.el6
View patch
redhatpatch availablevia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenShift Application RuntimesFixed in: keycloak
redhatend of lifevia redhat_api
Product: Red Hat Fuse 7Fixed in: keycloak

Vendor Advisories (2)

mavenGHSA-xvv8-8wh9-9fh2medium

Keycloak Authentication Error

May 13, 2022
redhatCVE-2018-10894Moderate

keycloak: auth permitted with expired certs in SAML client

Jul 9, 2018

References

access.redhat.com / errata/RHSA-2018:3592
Vendor Advisory
access.redhat.com / errata/RHSA-2018:3593
Vendor Advisory
access.redhat.com / errata/RHSA-2018:3595
Vendor Advisory
access.redhat.com / errata/RHSA-2019:0877
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchVendor Advisory