CVE-2026-4629

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 58/100
Published: 2026-06-30 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

A flaw was found in Keycloak. A highly privileged user with `manage-clients` permission can exploit this vulnerability by injecting a hardcoded role mapper into any client. This action allows the user to bypass existing scope restrictions and inject the `realm-admin` role into generated tokens, resulting in privilege escalation and full administrative access to the realm.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
redhat build_of_keycloak -

Bug Bounty Relevance

58 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.49%
Raw Score 0.004860
Percentile 41.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00486
2026-10-28
0.00486

Intelligence Sources

nvd ref →