CVE-2026-32630
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.
- Score
- CVSS 3.1 5.3 Medium
- Status
- Analyzed - security-advisories@github.com
- Published
- 2026-03-16
- Last modified
- 2026-03-16
- Weaknesses
- CWE-409
Affected products
References
- https://github.com/sindresorhus/file-type/commit/399b0f156063f5aeb1c124a7fd61028f3ea7c124
- https://github.com/sindresorhus/file-type/security/advisories/GHSA-j47w-4g3g-c36v
