CVE-2026-107602: Keycloak-services: unauthenticated cpu exhaustion via saml 1.1 keyinfo infinite loop
Red Hat · Red Hat build of Keycloak 26.4
Vendor fix available · Affected: Red Hat build of Keycloak 26.4 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 54% of scored CVEs
DescriptionCVE.org
A flaw was found in the SAML 1.1 XML parsing logic of Keycloak, an open-source identity and access management solution. The issue occurs when the parser encounters unexpected elements within a security token's key information section, causing the processing thread to enter an infinite loop. An unauthenticated remote attacker could exploit this by sending specially crafted requests, leading to 100% CPU usage and a total denial of service that requires a server restart to resolve.
Affected products10
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat build of Keycloak 26.4Versions not stated
- Red Hat · Red Hat build of Keycloak 26.4Versions not stated
- Red Hat · Red Hat build of Keycloak 26.4Versions not stated
- Red Hat · Red Hat build of Keycloak 26.4.17Versions not stated
- Red Hat · Red Hat build of Keycloak 26.6Versions not stated
- Red Hat · Red Hat build of Keycloak 26.6Versions not stated
- Red Hat · Red Hat build of Keycloak 26.6Versions not stated
- Red Hat · Red Hat build of Keycloak 26.6.8Versions not stated
- Red Hat · Red Hat build of Keycloak 26.6.8Versions not stated
- Red Hat · Red Hat Single Sign-On 7Versions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Red Hat
- Published
- November 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-107602 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.