CVE-2026-89298

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 55/100
Published: 2026-09-11 Modified: 2026-11-06 First seen: 2026-11-06 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

A flaw was found in the Dynamic Client Registration service of Keycloak, an open-source identity and access management solution. The issue occurs when a user with the view-clients role accesses the client registration endpoint to retrieve client details. Due to a failure to mask sensitive information, the service returns the client's confidential secret in cleartext. This could allow a read-only administrator to obtain full access to the affected client's account and potentially escalate their privileges within the realm.

References & Advisories (3)

https://access.redhat.com/errata/RHSA-2026:95761
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2531871
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

4.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.47%
Raw Score 0.004690
Percentile 41.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00469
2026-11-12
0.00469
2026-11-10
0.00469
2026-11-09
0.00469
2026-11-08
0.00469
2026-11-07
0.00469
2026-11-06
0.00413
2026-11-05
0.00413

Intelligence Sources

mitre ref →
nvd ref →