Inefficient Algorithmic Complexity in minimatch - CVE-2026-27903
Published: June 18, 2026
Vulnerability identifier: #VU134878
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2026-27903
CWE-ID: CWE-407
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: isaacs
Affected software:
minimatch
minimatch
Detailed vulnerability description
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.
How to mitigate CVE-2026-27903
Install security update from vendor's website.