Keycloak has debug default bind address
A vulnerability exists in Keycloak's server distribution where enabling debug mode (--debug) insecurely defaults to binding the Java Debug Wire Protocol (JDWP) port to all network interfaces (0.0.0.0). This exposes the debug port to the local network, allowing an attacker on the same network segment to attach a remote debugger and achieve remote code execution within the Keycloak Java virtual machine.
Red Hat evaluates this as a Moderate impact vulnerability due to the requirement of running debug mode and untrusted network. Also, for Red Hat Single Sign-On, this must as well be bound to 0.0.0.0 address, which is not recommended in production scenarios.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.keycloak:keycloak-quarkus-dist | < 26.4.4 | 26.4.4 |
References
- https://github.com/keycloak/keycloak/security/advisories/GHSA-j4vq-q93m-4683
- https://nvd.nist.gov/vuln/detail/CVE-2025-11538
- https://access.redhat.com/errata/RHSA-2025:21370
- https://access.redhat.com/errata/RHSA-2025:21371
- https://access.redhat.com/security/cve/CVE-2025-11538
- https://bugzilla.redhat.com/show_bug.cgi?id=2402622
- https://github.com/keycloak/keycloak
- CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-1327- Platform
- Java / Kotlin (Maven)
- Package
org.keycloak:keycloak-quarkus-dist- Disclosed
- 02.12.2025
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-j4vq-q93m-4683 - CC BY 4.0
Vulnerability history: org.keycloak:keycloak-quarkus-dist
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 10.2025 12.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2025: 2
- 2026: 0
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