CVE-2026-27903

Description

A flaw was found in minimatch, a utility for converting glob expressions into JavaScript regular expressions. A remote attacker can exploit this vulnerability by providing a specially crafted glob pattern containing multiple non-adjacent ** (GLOBSTAR) segments. This can lead to unbounded recursive backtracking in the matchOne() function, causing a Denial of Service (DoS) by stalling the Node.js event loop for an extended period.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score5.9N/A7.5
Attack VectorNetworkN/ANetwork
Attack ComplexityHighN/ALow
Privileges RequiredNoneN/ANone
User InteractionNoneN/ANone
ScopeUnchangedN/AUnchanged
ConfidentialityNoneN/ANone
Integrity ImpactNoneN/ANone
Availability ImpactHighN/AHigh

Vector

Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Understanding the Weakness (CWE)

CWE-1333

Availability

Technical Impact: DoS: Resource Consumption (CPU)

Attackers can create crafted inputs that intentionally cause the regular expression to use excessive backtracking in a way that causes the CPU consumption to spike.

Frequently Asked Questions

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