CVE-2026-107623CWE-862broken-access-control

CVE-2026-107623

Medium · published October 8, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
4.6
In the wild
Unconfirmed
What it is

A flaw was found in the OIDC Dynamic Client Registration (DCR) component of Keycloak. A bug in the response serialization causes the backchannel logout offline token revocation setting to be omitted from responses. When a client performs a standard update, this missing information causes the setting to be silently disabled. As a result, offline tokens may remain valid even after a user session is terminated via backchannel logout.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00158 · 4.6th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-10-08T19:17Z
References (2)
https://access.redhat.com/security/cve/CVE-2026-107623 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2547957 · [email protected]
EPSS history
Timeline
  • 10 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 08 OCT 14:39Z
    Keycloak-services: keycloak-services: oidc dcr read-modify-write silently disables offline token revocation
    cvelistv5
  • 08 OCT 14:39Z
    Keycloak-services: keycloak-services: oidc dcr read-modify-write silently disables offline token revocation
    cvelistv5