Vulnerability in Red Hat Build Of Keycloak 26.2
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (21.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Red Hat Build Of Keycloak 26.2 — versions 26.2.14-1, 26.2-16
- Red Hat Build Of Keycloak 26.2.14
- Red Hat Build Of Keycloak 26.4 — versions 26.4.10-1, 26.4-12
- Red Hat Build Of Keycloak 26.4.10
- Red Hat Single Sign-On 7
- Red Hat Build Of Keycloak
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:3925 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2026:3926 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2026:3947 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2026:3948 (vendor-advisory, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2026-2092 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-2092?
- CVE-2026-2092 is a high-severity vulnerability in Red Hat Build Of Keycloak 26.2, classified under CWE-1287. CVSS score: 7.7/10. Published 2026-03-18.
- How severe is CVE-2026-2092?
- High severity. CVSS v3 base score is 7.7 out of 10.