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CVE-2018-14637

24
FAUCET Score

CVE-2018-14637 is a high-severity vulnerability affecting Keycloak versions prior to 4.6.0.Final, where the SAML broker consumer endpoint fails to enforce expiration conditions on SAML assertions. This flaw allows an unauthenticated attacker to perform replay attacks, potentially leading to high impact on confidentiality, integrity, and availability. Despite its high CVSS score of 8.1, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.6.0CPE matchmatch criteria
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.81%
Probability of exploitation in next 30 days
EPSS Percentile
53.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0081 is in the 21st percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

mavenpatch availablevia ghsa
Product: org.keycloak:keycloak-coreFixed in: 4.6.0
redhatpatch availablevia redhat_api
Product: Red Hat Single Sign-On 7.2.5 zip
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 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

Vendor Advisories (2)

mavenGHSA-gf2j-7qwg-4f5xhigh

Improper Authentication in Keycloak

Dec 21, 2018
redhatCVE-2018-14637Important

keycloak: expiration not validated in SAML broker consumer endpoint

Nov 27, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory