What is CVE-2026-9793?

CVE-2026-9793 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.9/10. Published 2026-05-28.

How severe is CVE-2026-9793?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Red Hat Build Of Keycloak

CVE-2026-9793

A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This al…

EPSS: 0.000 (2.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-9793?: CVE-2026-9793 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.9/10. Published 2026-05-28.
How severe is CVE-2026-9793?: Medium severity. CVSS v3 base score is 5.9 out of 10.