High severity · published Mar 18, 2026
CVE-2026-2092
Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions
7.7
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RB
RHEL-8 based Middleware Containers · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Single Sign-On 7.6 for RHEL 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Single Sign-On 7.6 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Single Sign-On 7.6 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Keycloak 26.2 · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat build of Keycloak 26.4 · Red Hat
All versions, or not specified · source: vendor, CISA
BO
Build OF Keycloak · Redhat
26.2 before 26.2.14; 26.4 before 26.4.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2092
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2092
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/errata/RHSA-2026:76128
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:76129
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