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CVE-2026-112366— Picomatch through 4.0.7 ReDoS via single-branch repeated extglob patterns

Quick assessment

Affected
micromatch picomatch
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.

Picomatch 4.0.7 及更早版本存在正则表达式拒绝服务（ReDoS）漏洞。攻击者可通过提供单分支重复的扩展 glob 模式（例如 或 ），使事件循环被阻塞。由于 中的 函数会跳过此类模式的分析，导致对精心构造的短字符串执行指数级回溯，从而对 Node.js 应用程序造成拒绝服务。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood

Affected Version Matrix 1

VendorProduct Version RangeStatus
micromatch picomatch ≤ 4.0.7 affected
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I. Basic Information for CVE-2026-112366

Vulnerability Information
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Vulnerability Title
Picomatch through 4.0.7 ReDoS via single-branch repeated extglob patterns
Source: CVE Program / CVE List V5
Vulnerability Description
Picomatch through 4.0.7 contains a regular expression denial of service vulnerability that allows attackers to block the event loop by supplying single-branch repeated extglob patterns. Attackers can provide globs like +(*) or +(*a), which analyzeRepeatedExtglob in lib/parse.js skips, causing exponential backtracking against short crafted strings and denying service to Node.js applications.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
micromatch picomatch 0 ~ 4.0.7 -

II. Public POCs for CVE-2026-112366

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III. Intelligence Information for CVE-2026-112366

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Patches & Fixes for CVE-2026-112366 (1)

Vendor Advisories for CVE-2026-112366 (1)

IV. Related Vulnerabilities

Same product: picomatch
Same vendor: micromatch
Same weakness: CWE-1333

V. Comments for CVE-2026-112366

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