CVE-2026-2092

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.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.3

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
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	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-2092	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2437296	Issue Tracking 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	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-2092	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2437296	Issue Tracking Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2092.json	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:redhat:build_of_keycloak::::::::
	cpe:2.3:a:redhat:build_of_keycloak::::::::

History

No history.

Information

Published : 2026-03-18 02:16

Updated : 2026-08-18 17:49

NVD link : CVE-2026-2092

Mitre link : CVE-2026-2092

CVE.ORG link : CVE-2026-2092

JSON object : View

Products Affected

redhat

build_of_keycloak

CWE

CWE-1287

Improper Validation of Specified Type of Input

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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."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad en Keycloak. El endpoint del broker de Security Assertion Markup Language (SAML) de Keycloak no valida correctamente las aserciones cifradas cuando la respuesta SAML general no est\u00e1 firmada. Un atacante con una aserci\u00f3n SAML firmada v\u00e1lida puede explotar esto al crear una respuesta SAML maliciosa. Esto permite al atacante inyectar una aserci\u00f3n cifrada para un principal arbitrario, lo que lleva a un acceso no autorizado y a una potencial revelaci\u00f3n de informaci\u00f3n."}], "lastModified": "2026-08-18T17:49:38.050", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D39B54FB-C216-493F-A0D6-6F289959B3E9", "versionEndExcluding": "26.2.14", "versionStartIncluding": "26.2"}, {"criteria": "cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DFC39AF8-EEA9-4654-90AA-5456A0D48A6C", "versionEndExcluding": "26.4.10", "versionStartIncluding": "26.4"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}