CVE-2026-2092: high-severity vulnerability in Red Hat build of Keycloak 26.2
Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.4%
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:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Affected products
Red Hat · Red Hat build of Keycloak 26.2Red Hat · Red Hat build of Keycloak 26.2.14Red Hat · Red Hat build of Keycloak 26.4Red Hat · Red Hat build of Keycloak 26.4.10Red Hat · Red Hat Single Sign-On 7.6.13Red Hat · Red Hat Single Sign-On 7.6 for RHEL 7Red Hat · Red Hat Single Sign-On 7.6 for RHEL 8Red Hat · Red Hat Single Sign-On 7.6 for RHEL 9Red Hat · RHEL-8 based Middleware ContainersRelated CVEs — Red Hat build of Keycloak 26.2
In the same product, most dangerous first.
CVE-2026-18963CRITICALKeycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypassEPSS 4.7%CVE-2024-12397HIGHIo.quarkus.http/quarkus-http-core: quarkus http cookie smugglingEPSS 0.9%CVE-2026-7307HIGHKeycloak: keycloak: denial of service via specially crafted saml inputEPSS 0.9%CVE-2026-74909HIGHKeycloak-services: keycloak-services: incomplete fix for cve-2026-15573 allows policy enforcer bypass via percent-encoded uri segmentsEPSS 0.8%CVE-2026-7507HIGHOrg.keycloak/keycloak-services: session fixation in oidc login flow that can lead to account takeoverEPSS 0.8%CVE-2026-79651HIGHKeycloak-services: keycloak-services: unauthenticated dos via unbounded locale cachingEPSS 0.8%
References
https://access.redhat.com/errata/RHSA-2026:3925https://access.redhat.com/errata/RHSA-2026:3926https://access.redhat.com/errata/RHSA-2026:3947https://access.redhat.com/errata/RHSA-2026:3948https://access.redhat.com/errata/RHSA-2026:76128https://access.redhat.com/errata/RHSA-2026:76129https://access.redhat.com/errata/RHSA-2026:76130https://access.redhat.com/errata/RHSA-2026:76132https://access.redhat.com/errata/RHSA-2026:76134https://access.redhat.com/security/cve/CVE-2026-2092https://bugzilla.redhat.com/show_bug.cgi?id=2437296https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2092.json