CVE-2026-2092

HIGH

Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions

Title source: cna

Description

A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.

References (6)

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2026:3925

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2026:3926

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2026:3947

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2026:3948

[Vdb Entry, X_Refsource_Redhat] https://access.redhat.com/security/cve/CVE-2026-2092

[Issue Tracking, X_Refsource_Redhat] https://bugzilla.redhat.com/show_bug.cgi?id=2437296

Scores

CVSS v3 7.7

EPSS 0.0009

EPSS Percentile 25.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

Details

CWE

CWE-1287

Status published

Products (9)

org.keycloak/keycloak-saml-adapter-core 0Maven

org.keycloak/keycloak-saml-core 0Maven

org.keycloak/keycloak-services 0Maven

Red Hat/Red Hat build of Keycloak 26.2 26.2.14-1

Red Hat/Red Hat build of Keycloak 26.2 26.2-16

Red Hat/Red Hat build of Keycloak 26.2.14

Red Hat/Red Hat build of Keycloak 26.4 26.4.10-1

Red Hat/Red Hat build of Keycloak 26.4 26.4-12

Red Hat/Red Hat build of Keycloak 26.4.10

Published Mar 18, 2026

Tracked Since Mar 18, 2026