Dashboard / CVE-2026-37979

CVE-2026-37979

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 63/100
Published: 2026-05-19 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect (OIDC) token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other resource servers, compromising the confidentiality of lightweight access tokens. This issue can be exploited remotely by any confidential client in the realm with valid credentials.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
redhat build_of_keycloak 26.4 – 26.4.12

References & Advisories (4)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

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

EPSS — Exploitation Probability

0.39%
Raw Score 0.003850
Percentile 32.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00385
2026-10-28
0.00366

Intelligence Sources

mitre ref →
nvd ref →

External Links