CVE-2026-2575
CVE-2026-2575 updated by NVD
Summary
A flaw was found in Keycloak. An unauthenticated remote attacker can trigger an application level Denial of Service (DoS) by sending a highly compressed SAMLRequest through the SAML Redirect Binding. The server fails to enforce size limits during DEFLATE decompression, leading to an OutOfMemoryError (OOM) and subsequent process termination. This vulnerability allows an attacker to disrupt the availability of the service.
Affected packages
| Ecosystem | Package | Affected versions | Fixed versions |
|---|---|---|---|
| Maven | org.keycloak:keycloak-saml-adapter-core | — | 26.5.4 |
| Maven | org.keycloak:keycloak-saml-core | — | 26.5.4 |
| Maven | org.keycloak:keycloak-services | — | 26.5.4 |
Remediation: Upgrade to 26.5.4 or later.
References
Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.
Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.
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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.