CVE-2026-16089EPSS p20.1%

CVE-2026-16089CVE-2026-16089

redhat / build_of_keycloak

Description

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their own client, potentially allowing them to obtain access tokens for a victim's identity.

Scoring

CVSS 5.4 ()
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N
EPSS0.29% probability of exploitation · percentile 20.1% · 2026-10-05T12:00:23Z
Last modified2026-09-16
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.