🛡️ CVE-2026-2092 — keycloak-saml-adapter-core
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This advisory has been withdrawn because it is a duplicate of GHSA-794g-x443-36f7.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
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
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 | — | — |
References
Similar Threats
- Medium CVE-2026-2575
- Unknown CVE-2018-10894
Site Security Check
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