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

Quick assessment

Affected
isaacs minimatch
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

minimatch是isaacs个人开发者的一个 javascript 中的全局匹配器。 minimatch 10.2.3之前版本、9.0.7之前版本、8.0.6之前版本、7.4.8之前版本、6.2.2之前版本、5.1.8之前版本、4.2.5之前版本和3.1.4之前版本存在安全漏洞，该漏洞源于嵌套*()扩展通配符产生具有嵌套无界量词的正则表达式，可能导致灾难性回溯。

CVSS 7.5 · High EPSS 0.52% · P43

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2026-27904

Vulnerability Information
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Vulnerability Title
minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
minimatch 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
minimatch是isaacs个人开发者的一个 javascript 中的全局匹配器。 minimatch 10.2.3之前版本、9.0.7之前版本、8.0.6之前版本、7.4.8之前版本、6.2.2之前版本、5.1.8之前版本、4.2.5之前版本和3.1.4之前版本存在安全漏洞，该漏洞源于嵌套*()扩展通配符产生具有嵌套无界量词的正则表达式，可能导致灾难性回溯。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
isaacs minimatch >= 10.0.0, < 10.2.3 -

II. Public POCs for CVE-2026-27904

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III. Intelligence Information for CVE-2026-27904

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Vendor Advisories for CVE-2026-27904 (1)

IV. Related Vulnerabilities

Same product: minimatch
Same vendor: isaacs
Same weakness: CWE-1333

V. Comments for CVE-2026-27904

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