Inefficient Algorithmic Complexity in minimatch - CVE-2026-27903

Vulnerability identifier: #VU134878

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-27903

CWE-ID: CWE-407

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient algorithmic complexity in matchOne() when processing glob patterns containing multiple non-adjacent GLOBSTAR segments. A remote attacker can supply a specially crafted glob pattern to cause a denial of service.

The issue is triggered on non-matching input and can stall the Node.js event loop while the recursive call tree is fully explored.

minimatch
Fusion Content-Aware Storage
IBM Fusion HCI
Jira Service Management Data Center
Confluence Data Center
Jira Software Data Center
IBM QRadar Data Synchronization App

Install security update from vendor's website.

minimatch - addressed in versions 3.1.3, 4.2.5, 5.1.8, 6.2.2, 7.4.8, 8.0.6, 9.0.7, 10.2.3
Fusion Content-Aware Storage - update to 1.1.5
IBM Fusion HCI - update to 2.13.0
Jira Service Management Data Center - addressed in versions 10.3.22, 11.3.4
Confluence Data Center - addressed in versions 9.2.21, 10.2.10
Jira Software Data Center - addressed in versions 10.3.22, 11.3.4
IBM QRadar Data Synchronization App - update to 4.0.0

• https://github.com/isaacs/minimatch/security/advisories/GHSA-7r86-cg39-jmmj
• https://github.com/isaacs/minimatch/blob/v10.2.2/src/index.ts#L960

• Multiple vulnerabilities in minimatch
• Multiple vulnerabilities in Confluence Data Center
• Multiple vulnerabilities in Jira Service Management Data Center and Jira Service Management Server
• Multiple vulnerabilities in Jira Software Data Center
• Multiple vulnerabilities in IBM QRadar Data Synchronization App
• Multiple vulnerabilities in IBM Fusion, IBM Fusion HCI, and IBM Fusion Content-Aware Storage