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GHSA-7h2j-956f-4vf2: @isaacs/brace-expansion has Uncontrolled Resource Consumption

February 3, 2026

@isaacs/brace-expansion is vulnerable to a Denial of Service (DoS) issue caused by unbounded brace range expansion. When an attacker provides a pattern containing repeated numeric brace ranges, the library attempts to eagerly generate every possible combination synchronously. Because the expansion grows exponentially, even a small input can consume excessive CPU and memory and may crash the Node.js process.

References

  • github.com/advisories/GHSA-7h2j-956f-4vf2
  • github.com/isaacs/brace-expansion
  • github.com/isaacs/brace-expansion/security/advisories/GHSA-7h2j-956f-4vf2

Code Behaviors & Features

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Affected versions

All versions before 5.0.1

Fixed versions

  • 5.0.1

Solution

Upgrade to version 5.0.1 or above.

Impact 8.6 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-1333: Inefficient Regular Expression Complexity

Source file

npm/@isaacs/brace-expansion/GHSA-7h2j-956f-4vf2.yml

Spotted a mistake? Edit the file on GitLab.

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