# CVE-2026-27904: minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions

> CVE-2026-27904: minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-27904
Last updated: 2026-06-17T10:27:51Z

- Published: 2026-02-26 01:07 UTC · Updated: 2026-06-17 10:27 UTC · Assigner: GitHub\_M
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS: 0.52%, 44th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-1333

## Description

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 3.1.4, nested \`\*()\` extglobs produce regexps with nested unbounded quantifiers (e.g. \`(?:(?:a\|b)\*)\*\`), which exhibit catastrophic backtracking in V8. With a 12-byte pattern \`\*(\*(\*(a\|b)))\` and an 18-byte non-matching input, \`minimatch()\` stalls for over 7 seconds. Adding a single nesting level or a few input characters pushes this to minutes. This is the most severe finding: it is triggered by the default \`minimatch()\` API with no special options, and the minimum viable pattern is only 12 bytes. The same issue affects \`+()\` extglobs equally. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4 fix the issue.

## Affected vendors and products

- isaacs: minimatch

## Tracked companies

- [Confluence](https://rewindex.com/company/confluence.md)
- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-27904)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-27904)
- [https://github.com/isaacs/minimatch/security/advisories/GHSA-23c5-xmqv-rm74](https://github.com/isaacs/minimatch/security/advisories/GHSA-23c5-xmqv-rm74)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-27904 · Markdown: https://rewindex.com/cve/CVE-2026-27904.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-27904 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:35.336Z