High severityNVD Advisory· Published Mar 18, 2026· Updated Mar 18, 2026
Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions
CVE-2026-2092
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.keycloak:keycloak-saml-adapter-coreMaven | < 26.2.14 | 26.2.14 |
org.keycloak:keycloak-saml-coreMaven | >= 26.3.0, < 26.4.10 | 26.4.10 |
org.keycloak:keycloak-servicesMaven | >= 26.5.0, < 26.5.5 | 26.5.5 |
org.keycloak:keycloak-saml-adapter-coreMaven | >= 26.3.0, < 26.4.10 | 26.4.10 |
org.keycloak:keycloak-saml-adapter-coreMaven | >= 26.5.0, < 26.5.5 | 26.5.5 |
org.keycloak:keycloak-servicesMaven | < 26.2.14 | 26.2.14 |
org.keycloak:keycloak-servicesMaven | >= 26.3.0, < 26.4.10 | 26.4.10 |
org.keycloak:keycloak-saml-coreMaven | < 26.2.14 | 26.2.14 |
org.keycloak:keycloak-saml-coreMaven | >= 26.5.0, < 26.5.5 | 26.5.5 |
Affected products
5- Red Hat/Red Hat build of Keycloak 26.2.14v5cpe:/a:redhat:build_keycloak:26.2::el9
- Red Hat/Red Hat build of Keycloak 26.4.10v5cpe:/a:redhat:build_keycloak:26.4::el9
- ghsa-coords3 versionspkg:maven/org.keycloak/keycloak-saml-adapter-corepkg:maven/org.keycloak/keycloak-saml-corepkg:maven/org.keycloak/keycloak-services
< 26.2.14+ 2 more
- (no CPE)range: < 26.2.14
- (no CPE)range: >= 26.3.0, < 26.4.10
- (no CPE)range: >= 26.5.0, < 26.5.5
Patches
Vulnerability mechanics
References
9- access.redhat.com/errata/RHSA-2026:3925ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2026:3926ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2026:3947ghsavendor-advisoryx_refsource_REDHATWEB
- access.redhat.com/errata/RHSA-2026:3948ghsavendor-advisoryx_refsource_REDHATWEB
- github.com/advisories/GHSA-wmxr-6j5f-838pghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-2092ghsaADVISORY
- access.redhat.com/security/cve/CVE-2026-2092ghsavdb-entryx_refsource_REDHATWEB
- bugzilla.redhat.com/show_bug.cgighsaissue-trackingx_refsource_REDHATWEB
- github.com/keycloak/keycloak/commit/b40a25908d937bb0563ea516487bc2c7c1d92508ghsaWEB
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