SB2026042822 - Improper handling of highly compressed data in file-type

Description

This security bulletin contains information about 1 vulnerability.

1) Improper handling of highly compressed data (CVE-ID: CVE-2026-32630)

CWE-ID: CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper handling of highly compressed data in the ZIP detection logic when processing crafted ZIP files through fileTypeFromBuffer(), fileTypeFromBlob(), or fileTypeFromFile(). A remote attacker can supply a specially crafted ZIP file to cause a denial of service.

Only known-size inputs are affected during ZIP-based type detection of entries such as [Content_Types].xml; stream-based detection is not affected.

Remediation

Install update from vendor's website.

References

• https://github.com/sindresorhus/file-type/security/advisories/GHSA-j47w-4g3g-c36v
• https://github.com/advisories/GHSA-j47w-4g3g-c36v