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Medium severity5.3NVD Advisory· Published May 14, 2024· Updated Jun 17, 2026

CVE-2024-4067

CVE-2024-4067

Description

The NPM package micromatch prior to 4.0.8 is vulnerable to Regular Expression Denial of Service (ReDoS). The vulnerability occurs in micromatch.braces() in index.js because the pattern .* will greedily match anything. By passing a malicious payload, the pattern matching will keep backtracking to the input while it doesn't find the closing bracket. As the input size increases, the consumption time will also increase until it causes the application to hang or slow down. There was a merged fix but further testing shows the issue persists. This issue should be mitigated by using a safe pattern that won't start backtracking the regular expression due to greedy matching. This issue was fixed in version 4.0.8.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
micromatchnpm
< 4.0.84.0.8

Affected products

84

Patches

Vulnerability mechanics

References

13

News mentions

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