Vulnerability Description
file-type detects the file type of a file, stream, or data. From 20.0.0 to 21.3.1, a crafted ZIP file can trigger excessive memory growth during type detection in file-type when using fileTypeFromBuffer(), fileTypeFromBlob(), or fileTypeFromFile(). The ZIP inflate output limit is enforced for stream-based detection, but not for known-size inputs. As a result, a small compressed ZIP can cause file-type to inflate and process a much larger payload while probing ZIP-based formats such as OOXML. This vulnerability is fixed in 21.3.2.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sindresorhus | File-Type | >= 20.0.0, < 21.3.2 |
Related Weaknesses (CWE)
References
- https://github.com/sindresorhus/file-type/commit/399b0f156063f5aeb1c124a7fd61028Patch
- https://github.com/sindresorhus/file-type/security/advisories/GHSA-j47w-4g3g-c36ExploitVendor Advisory
- https://github.com/sindresorhus/file-type/security/advisories/GHSA-j47w-4g3g-c36ExploitVendor Advisory
FAQ
What is CVE-2026-32630?
CVE-2026-32630 is a vulnerability with a CVSS score of 5.3 (MEDIUM). file-type detects the file type of a file, stream, or data. From 20.0.0 to 21.3.1, a crafted ZIP file can trigger excessive memory growth during type detection in file-type when using fileTypeFromBuff...
How severe is CVE-2026-32630?
CVE-2026-32630 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-32630?
Check the references section above for vendor advisories and patch information. Affected products include: Sindresorhus File-Type.