What is CVE-2026-27903?

CVE-2026-27903 is a high-severity vulnerability in Isaacs Minimatch, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-02-26.

How severe is CVE-2026-27903?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Isaacs Minimatch

CVE-2026-27903

minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.3, `matchOne()` performs unbounded recursive backtracking wh…

EPSS: 0.005 (40.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Isaacs Minimatch — versions >= 10.0.0, < 10.2.3, >= 9.0.0, < 9.0.7, >= 8.0.0, < 8.0.6
Minimatch_project Minimatch

Weakness classification (CWE)

CWE-407 — Inefficient Algorithmic Complexity

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-27903?: CVE-2026-27903 is a high-severity vulnerability in Isaacs Minimatch, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-02-26.
How severe is CVE-2026-27903?: High severity. CVSS v3 base score is 7.5 out of 10.