CVE-2026-7307: Improper Validation of Syntactic Correctness of 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.
CVE-2026-7307: Improper Validation of Syntactic Correctness of Input
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 v3.1
Score 7.5high
Affected software
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:19594
- Cve Count
- 3
- Additional Cves
- ["CVE-2026-7504","CVE-2026-7507"]
- State
- PUBLISHED
Threat ID: 6a4049db27e9c7971982fdae
Added to database: 06/27/2026, 22:08:27 UTC
Last enriched: 08/10/2026, 20:06:08 UTC
Last updated: 09/10/2026, 21:06:23 UTC
Views: 41
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