Improper Certificate Validation Affecting keycloak package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-KEYCLOAK-17668155
- published29 Jun 2026
- disclosed11 Jun 2019
Introduced: 11 Jun 2019
CVE-2019-3875 (opens in a new tab)How to fix?
There is no fixed version for RHEL:10 keycloak.
NVD Description
Note: Versions mentioned in the description apply only to the upstream keycloak package and not the keycloak package as distributed by RHEL.
See How to fix? for RHEL:10 relevant fixed versions and status.
A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols ('http' or 'ldap') and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn't validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.