Inefficient Regular Expression Complexity Affecting npm package, versions <1:11.11.0-1.24.14.1.2.module+el8.10.0+24190+49a46c75


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.52% (40th percentile)

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  • Snyk IDSNYK-CENTOS8-NPM-15637771
  • published15 Mar 2026
  • disclosed20 Feb 2026

Introduced: 20 Feb 2026

CVE-2026-26996  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade Centos:8 npm to version 1:11.11.0-1.24.14.1.2.module+el8.10.0+24190+49a46c75 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream npm package and not the npm package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Versions 10.2.0 and below are vulnerable to Regular Expression Denial of Service (ReDoS) when a glob pattern contains many consecutive * wildcards followed by a literal character that doesn't appear in the test string. Each * compiles to a separate [^/]*? regex group, and when the match fails, V8's regex engine backtracks exponentially across all possible splits. The time complexity is O(4^N) where N is the number of * characters. With N=15, a single minimatch() call takes ~2 seconds. With N=34, it hangs effectively forever. Any application that passes user-controlled strings to minimatch() as the pattern argument is vulnerable to DoS. This issue has been fixed in version 10.2.1.

CVSS Base Scores

version 3.1