PT-2026-93787 · Red Hat · Keycloak
CVE-2026-18212
·
Published
2026-09-16
·
Updated
2026-09-18
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Keycloak (affected versions not specified)
Description
A flaw exists in the SAML Redirect Binding implementation of Keycloak. The issue stems from custom DEFLATE compression and decompression helpers that fail to release native zlib memory after use. An unauthenticated attacker can trigger native memory exhaustion and a denial of service by sending repeated malformed SAML requests.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
DoS
Memory Leak
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Weakness Enumeration
Related Identifiers
Affected Products
Keycloak