7.5

CVE-2026-7307

Keycloak: keycloak: denial of service via specially crafted saml input

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Redhat ≫ Build Of Keycloak Version >= 26.4 < 26.4.12
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.74% 0.501
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secalert@redhat.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1286 Improper Validation of Syntactic Correctness of Input

The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.

https://access.redhat.com/security/cve/CVE-2026-7307
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2476526
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19597
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19594
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19596
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19595
Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7307.json