VulnerabilityModified
CVE-2026-7307
A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint.
HIGH 7.5EPSS 0.74%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.74% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1286
- Affected
- redhat/build of keycloak
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2026:19594Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19595Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19596Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19597Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-7307Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2476526Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19594Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19595Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19596Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:19597Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-7307Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2476526Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7307.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.