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CVE-2026-105331: CWE-426: Untrusted Search Path in Checkmk GmbH Checkmk

0
Medium
VulnerabilityCVE-2026-105331cvecve-2026-105331cwe-426cwe-829
Published: 10/08/2026 (10/08/2026, 14:19:41 UTC)
Source: CVE Database V5
Vendor/Project: Checkmk GmbH
Product: Checkmk

Description

Local privilege escalation in Checkmk 2.5.0 before 2.5.0p10 allows a user with access to edit the Oracle Instant Client referenced by the agent plugin 'mk-oracle' to escalate their privileges if an agent has this plugin enabled.

CVSS v4.0

Score 5.2medium

Attack Vector
Local
Attack Complexity
High
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
None
Vuln. Availability
None
Subsq. Confidentiality
High
Subsq. Integrity
High
Subsq. Availability
High
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

Affected software

Checkmk GmbH

Checkmk

Affected versions
>=2.5.0 <2.5.0p10
GitHub Actionsmore threats →ai
checkmk/checkmk
pkg:github/checkmk/checkmk
Affected versions
>=2.5.0 <2.5.0p10

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/08/2026, 15:03:34 UTC

Technical Analysis

This vulnerability (CWE-426) in Checkmk 2.5.0 before 2.5.0p10 involves an untrusted search path in the 'mk-oracle' agent plugin. A local user who can modify the Oracle Instant Client referenced by this plugin may escalate their privileges when the agent runs with this plugin enabled. The CVSS 4.0 score is 5.2 (medium severity), reflecting local attack vector with high complexity and partial privileges required.

Potential Impact

An attacker with local access and the ability to edit the Oracle Instant Client used by the 'mk-oracle' plugin can escalate their privileges on the system. This could lead to unauthorized actions beyond their initial permissions. There are no known exploits in the wild at this time.

Mitigation Recommendations

A fixed version (2.5.0p10 or later) is implied by the affected version range but no explicit patch link is provided. Users should upgrade to version 2.5.0p10 or later once available to remediate this vulnerability. Until then, restricting access to the Oracle Instant Client files and disabling the 'mk-oracle' plugin if not needed can reduce risk.

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Technical Details

Data Version
5.2
Assigner Short Name
Checkmk
Date Reserved
2026-10-05T10:00:29.454Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6ac7ad642cdf04f65620c9ec

Added to database: 10/08/2026, 14:49:08 UTC

Last enriched: 10/08/2026, 15:03:34 UTC

Last updated: 10/09/2026, 04:19:07 UTC

Views: 12

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