Advisoriesby IbisRed HatCVE-2026-103884
Red Hat Build of Keycloak: information disclosure
Medium6.5CVE-2026-103884 · Published Oct 1, 2026
A flaw was found in the X.509 client certificate authenticator of Keycloak. When CRL Distribution Point checking is enabled, the server fails to properly validate the file paths provided in a client certificate. An attacker can provide a specially crafted certificate that causes the server to attempt to read sensitive files from the local system or exhaust memory by loading extremely large files, potentially leading to information disclosure or a system crash.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak Product | all versions | No fix yet |
| all versions | No fix yet | |
| Red Hat Single Sign-On 7 Product | all versions | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-22
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Oct 1 | Red Hat 389-ds-base: resource exhaustion | High7.5 | No fix yet |
| Oct 1 | Red Hat Satellite 6: SQL injection | Medium6.5 | No fix yet |
| Oct 1 | Red Hat Satellite 6: observable discrepancy | Medium4.3 | No fix yet |
| Oct 1 | Red Hat Satellite 6: command injection | Medium5.3 | No fix yet |
| Oct 1 | Red Hat Satellite 6: command injection | Medium6.7 | No fix yet |
| Oct 1 | Red Hat Foreman. This vulnerability: information disclosure | Critical9.1 | No fix yet |