5.5

CVE-2025-13467: keycloak Deserialization of Untrusted Data

CVSS: 5.5v3.1MediumDeferred
AliasesCGA-2mm9-wcxj-h2j2CGA-6255-6gp9-4jg3CGA-797g-jxqm-83qj
Published 25-11-2025Last modified 23-12-2025
Open JSON

Vulnerability summary

CVE-2025-13467 is a medium (CVSS 5.5) Deserialization of Untrusted Data vulnerability in keycloak. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 36.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.44%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 1 · Downstream 0 · Related 4
GHSA-93VM-MQPW-8WH3CGA-2879-WM7Q-Q8GHCGA-6Q8V-53HR-FP69CGA-6XCP-RW9R-9C76CGA-C39W-39FC-R39H

Timeline

  1. 25-11-2025
    PublishedVulnerability first disclosed.
  2. 23-12-2025
    Last modifiedVulnerability information updated.

Description

A flaw was found in the Keycloak LDAP User Federation provider. This vulnerability allows an authenticated realm administrator to trigger deserialization of untrusted Java objects via a malicious LDAP server configuration.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

0.00 pp

From 0.44% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard5 products
  • keycloak-26.2< 26.2.5-r7
  • keycloak-26.2-compat< 26.2.5-r7
  • keycloak-26.2-iamguarded-compat< 26.2.5-r7
  • keycloak-fips-26.2-iamguarded-fips< 26.2.5-r9
  • keycloak-fips-26.3-iamguarded-fips< 26.3.5-r5
Keycloak1 product
Org.keycloak1 product
  • keycloak-ldap-federation≥ 26.3.0, < 26.4.6 | < 26.2.11

3 vendors · 7 products

References

16 links
Show all 16 references