minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects
Description
minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects
AI Analyst Comment
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
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VENDOR: Isaacs
PRODUCT: minimatch
AFFECTED_VERSIONS: See vendor advisory for specific affected versions
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Description Summary:
The minimatch library, a JavaScript utility for glob matching, is vulnerable to a flaw that could result in application instability or unauthorized processing of malicious expressions.
Executive Summary:
The minimatch JavaScript library contains a high-severity vulnerability that could allow attackers to trigger a denial-of-service or compromise application logic through malformed glob expressions.
Vulnerability Details
CVE-ID: CVE-2026-27903
Affected Software: minimatch
Affected Versions: See vendor advisory for specific affected versions
Vulnerability: This vulnerability involves the way the minimatch utility converts glob expressions into JavaScript Regular Expressions. An attacker providing a specially crafted input string could potentially trigger a Regular Expression Denial of Service (ReDoS) or bypass intended matching logic.
Business Impact
Because minimatch is a foundational dependency in many Node.js applications and build tools, a vulnerability here has a wide-reaching impact. Exploitation could result in significant application downtime, increased CPU consumption on servers, or the bypassing of security filters that rely on glob matching for file or path authorization. The CVSS score of 7.5 reflects these substantial operational risks.
Remediation Plan
Immediate Action: Update the minimatch package to the latest version via npm or your preferred package manager and redeploy affected applications.
Proactive Monitoring: Monitor application performance for sudden spikes in CPU usage, which may indicate an attempt to exploit a ReDoS vulnerability.
Compensating Controls: Implement input validation to sanitize and limit the length and complexity of user-provided strings that are passed to glob-matching functions.
Exploitation Status
Public Exploit Available: false
Analyst Notes: As of February 26, 2026, there is no public information indicating active exploitation of this vulnerability. However, vulnerabilities in widely used utility libraries are often targeted quickly once details are released to the developer community.
Analyst Recommendation
It is critical to identify all internal applications and CI/CD pipelines that utilize the minimatch library. Immediate updates are required to ensure that these applications remain resilient against denial-of-service attacks and to maintain the integrity of path-matching security controls.