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CVE-2026-4282

7.4 high exploit SSVC exploitation: none Modified
NVD · CVE.org

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation.

Fix

Public exploits 1

Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.

Patch, vendor advisory and mitigation references on NVD 12

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.4 · redhatNVD modified 2026-10-26 21:10

Affected (CPE criteria) 5

  • cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*
  • cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:*
  • cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:*
  • cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:*
  • cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:*

References 13