Quick answers
- Is CVE-2026-107602 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-107602 being exploited in the wild.
- How severe is CVE-2026-107602?
- High severity, with a CVSS score of 7.5, published 5 November 2026.
- Which products and versions are affected?
- Keycloak Keycloak.
- Is there a fix for CVE-2026-107602?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-107602 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-107602?
- Check whether you run Keycloak. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an infinite loop (CWE-835) in the SAML 1.1 XML parsing logic triggered when the parser encounters unexpected elements within a security token's KeyInfo section. An unauthenticated remote attacker can exploit this via network requests under default configurations, causing complete denial of service through CPU and thread exhaustion. Red Hat reports no mitigation is currently available.
Affected products
- Keycloak Keycloak
Timeline
- 2026-11-05: disclosed