🛡️ CVE-2026-2092 — keycloak-saml-adapter-core

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-1287 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Duplicate Advisory: Keycloak: Unauthorized access via improper validation of encrypted SAML assertions

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-794g-x443-36f7. This link is maintained to preserve external references.

Original 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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity low, availability low.

Weakness class

CVE-2026-2092 is classified as CWE-1287: Improper Validation of Specified Type of Input. The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.

Affected software

CVE-2026-2092 is recorded against 4 packages.

  • org.keycloak:keycloak-saml-adapter-core (from 26.5.0 up to 26.5.5)
  • org.keycloak:keycloak-saml-core (from 26.5.0 up to 26.5.5)
  • org.keycloak:keycloak-services (from 26.5.0)
  • unknown

Timeline and source

Published on 18 March 2026 and last revised on 2 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

nvd.nist.gov (Advisory)
github.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
access.redhat.com (Web)
bugzilla.redhat.com (Web)
github.com (Package)
security.access.redhat.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
CWE CWE-1287
Public Exploit ✅ No
Source NVD
Published 2026-03-18
Updated 2026-08-12
Modified 2026-07-02
Fix URL N/A

Affected Packages

Software From version Fixed in
org.keycloak:keycloak-saml-adapter-core 26.5.0 26.5.5
org.keycloak:keycloak-saml-core 26.5.0 26.5.5
org.keycloak:keycloak-services 26.5.0
unknown

Similar Threats

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