CVE-2026-0976

LOW
2026-01-15 [email protected] GHSA-v897-pv23-r8cw
3.7
CVSS 3.1

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 15, 2026 - 13:16 nvd
LOW 3.7

Tags

Code Injection

Description

A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable.

Analysis

A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. …

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Remediation

During next maintenance window: Apply vendor patches when convenient. Verify input validation controls are in place.

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Priority Score

19
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +18
POC: 0

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CVE-2026-0976 vulnerability details – vuln.today
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