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fix(deps): update dependency file-type to v21 [security]#777

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fix(deps): update dependency file-type to v21 [security]#777
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renovate/npm-file-type-vulnerability

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@renovate renovate Bot commented May 8, 2026

This PR contains the following updates:

Package Change Age Confidence
file-type ^19.0.0^21.0.0 age confidence

file-type affected by infinite loop in ASF parser on malformed input with zero-size sub-header

CVE-2026-31808 / GHSA-5v7r-6r5c-r473

More information

Details

Impact

A denial of service vulnerability exists in the ASF (WMV/WMA) file type detection parser. When parsing a crafted input where an ASF sub-header has a size field of zero, the parser enters an infinite loop. The payload value becomes negative (-24), causing tokenizer.ignore(payload) to move the read position backwards, so the same sub-header is read repeatedly forever.

Any application that uses file-type to detect the type of untrusted/attacker-controlled input is affected. An attacker can stall the Node.js event loop with a 55-byte payload.

Patches

Fixed in version 21.3.1. Users should upgrade to >= 21.3.1.

Workarounds

Validate or limit the size of input buffers before passing them to file-type, or run file type detection in a worker thread with a timeout.

References
  • Fix commit: 319abf871b50ba2fa221b4a7050059f1ae096f4f
Reporter

crnkovic@lokvica.com

Severity

  • CVSS Score: 5.3 / 10 (Medium)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


Release Notes

sindresorhus/file-type (file-type)

v21.3.1

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v21.3.0

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  • Add support for Mach-O Universal (aka "Fat") binaries and additional architectures (#​779) d223491

v21.2.0

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v21.1.1

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v21.1.0

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v21.0.0

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Breaking
  • Require Node.js 20 24aec1f
  • Drop Adobe Illustrator (.ai) detection support (#​743) af169f3
  • Correct Matroska (video) MIME-type to formal IANA registration (#​753) f53f5ff
  • Correct FLAC MIME-type to formal IANA registration (#​755) b9fda36
  • Correct Apache Parquet MIME-type to formal IANA registration (#​748) 98e3f8e
  • Correct Apache Arrow MIME-type to formal IANA registration (#​754) 7184775
Improvements
Fixes

v20.5.0

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  • Add support Office PowerPoint 2007 (macro-enabled) slide show (#​747) f1b4c7a

v20.4.1

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  • Add workaround for using bundler as the module-resolution in TypeScript (#​744) 90bfe33

v20.4.0

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v20.3.0

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v20.2.0

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v20.1.0

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v20.0.1

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v20.0.0

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Breaking
  • Drop MIME-type and extension enumeration in types (#​693) 0ff11c6
  • Remove NodeFileTypeParser in favor of using FileTypeParser on all platforms (#​707) ff8eed8
Improvements
Fixes

v19.6.0

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v19.5.0

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v19.4.1

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  • Fix passing options to fileTypeStream in default entry point (#​653) ea314a4

v19.4.0

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v19.3.0

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v19.2.0

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v19.1.1

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  • Fix Node.js entry point export fileTypeFromTokenizer (#​639) 20fdba7

v19.1.0

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Release notes

  • Please note that fileTypeFromBlob(blob) is streaming the Blob instead of buffering, which require at least Node.js ≥ 20.

Configuration

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@renovate renovate Bot added the dependencies Pull requests that update a dependency file label May 8, 2026
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github-actions Bot commented May 8, 2026


🐋 🤖

🔃

A docker image for this PR is being built!

docker pull freyrcli/freyrjs-git:pr-777
Base (master)

What's this?

This docker image is a self-contained sandbox that includes all the patches made in this PR. Allowing others to easily use your patches without waiting for it to get merged and released officially.

For more context, see https://github.com/miraclx/freyr-js#docker-development.

@renovate renovate Bot force-pushed the renovate/npm-file-type-vulnerability branch from a9b0603 to 9155e09 Compare May 12, 2026 10:04
@renovate renovate Bot force-pushed the renovate/npm-file-type-vulnerability branch from 9155e09 to a8c4231 Compare May 28, 2026 17:01
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