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OpenAdvisories

Description

Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as `+()` and `*()`, especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that can exhibit catastrophic backtracking on non-matching input. Applications are impacted when they allow untrusted users to supply glob patterns that are passed to `picomatch` for compilation or matching. In those cases, an attacker can cause excessive CPU consumption and block the Node.js event loop, resulting in a denial of service. Applications that only use trusted, developer-controlled glob patterns are much less likely to be exposed in a security-relevant way. This issue is fixed in picomatch 4.0.4, 3.0.2 and 2.3.2. Users should upgrade to one of these versions or later, depending on their supported release line. If upgrading is not immediately possible, avoid passing untrusted glob patterns to `picomatch`. Possible mitigations include disabling extglob support for untrusted patterns by using `noextglob: true`, rejecting or sanitizing patterns containing nested extglobs or extglob quantifiers such as `+()` and `*()`, enforcing strict allowlists for accepted pattern syntax, running matching in an isolated worker or separate process with time and resource limits, and applying application-level request throttling and input validation for any endpoint that accepts glob patterns.

Affected products

VendorProductAffectedFixed
micromatch picomatch >= 4.0.0, < 4.0.4, >= 3.0.0, < 3.0.2, < 2.3.2 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 node-anymatch 3.1.3+~cs8.0.6-1 —
Debian 13 node-anymatch No fix yet —
Debian 12 node-anymatch No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS node-anymatch No fix yet —
Ubuntu 25.10 node-anymatch No fix yet —
Ubuntu 24.04 LTS node-anymatch No fix yet —
Ubuntu 22.04 LTS node-anymatch No fix yet —
Ubuntu 20.04 LTS node-anymatch No fix yet —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS node-anymatch No fix yet —

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 nodejs-nodemon No fix yet —
Azure Linux 3 nodejs24 24.14.1-2 —

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling argo-workflows-ui-4.0 4.0.3-r2 —
Wolfi rolling code-server 4.112.0-r2 —
Wolfi rolling katib-earlystopping +8 0.19.0-r25 —
Wolfi rolling katib-suggestion-goptuna-compat 0.19.0-r40 —
Wolfi rolling kubeflow-pipelines-frontend 2.16.0-r11 —
Wolfi rolling lerna 9.0.7-r2 —
Wolfi rolling nextcloud-server-33 33.0.6-r1 —
Wolfi rolling node-gyp 12.2.0-r2 —
Wolfi rolling npm 11.12.1-r0 —
Wolfi rolling opensearch-dashboards-3 3.5.0-r11 —
Wolfi rolling prism 5.14.3-r13 —
Wolfi rolling pulumi-language-nodejs 3.229.0-r0 —
Wolfi rolling rancher-api-ui 1.2.3-r8 —
Wolfi rolling renovate 43.104.7-r1 —
Wolfi rolling saf 1.6.0-r0 —
Wolfi rolling sqlpad 7.5.7-r28 —
Wolfi rolling tileserver-gl 5.5.0-r11 —
Wolfi rolling ts-patch 4.0.1-r0 —
Wolfi rolling vite 8.0.11-r0 —
Wolfi rolling vitess-23 23.0.3-r12 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
npm picomatch >= 4.0.0, < 4.0.4 4.0.4 GHSA-c2c7-rcm5-vvqj
npm picomatch >= 3.0.0, < 3.0.2 3.0.2 GHSA-c2c7-rcm5-vvqj
npm picomatch < 2.3.2 2.3.2 GHSA-c2c7-rcm5-vvqj

Advisories 3

References