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CVE

CVE-2026-2092

Keycloak: Unauthorized access via improper validation of encrypted SAML assertions
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CVE

CVE-2026-2092

Keycloak: Unauthorized access via improper validation of encrypted SAML assertions

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.7
-
3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
C
H
U
7.7
-
3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-2092, https://github.com/keycloak/keycloak/commit/b40a25908d937bb0563ea516487bc2c7c1d92508, https://access.redhat.com/errata/RHSA-2026:3925, https://access.redhat.com/errata/RHSA-2026:3926, https://access.redhat.com/errata/RHSA-2026:3947, https://access.redhat.com/errata/RHSA-2026:3948, https://access.redhat.com/security/cve/CVE-2026-2092, https://bugzilla.redhat.com/show_bug.cgi?id=2437296, https://github.com/keycloak/keycloak

Severity

7.7

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.7
EPSS Probability
0.00091%
EPSS Percentile
0.25449%
Introduced Version
3.2.0.CR1,1.9.5.Final,1.8.0.CR1,21.0.0,4.1.0.Final,1.6.0.Final,22.0.0,2.5.0.CR1,1.9.0.CR1,1.2.0.CR1,23.0.0
Fix Available
26.5.5

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