CVE-2026-107623

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 59/100
Published: 2026-10-08 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: Low
A: None

Description

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.

Weakness Classification (1)

References & Advisories (4)

https://access.redhat.com/errata/RHSA-2026:95761
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:95762
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2547957
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

59 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

4.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS — Exploitation Probability

0.20%
Raw Score 0.001960
Percentile 9.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00196
2026-11-12
0.00196
2026-11-10
0.00196
2026-11-09
0.00196
2026-11-08
0.00196
2026-11-07
0.00196
2026-11-06
0.00158
2026-11-05
0.00158

Intelligence Sources

mitre ref →
nvd ref →