Improper handling of highly compressed data in file-type - CVE-2026-32630
Published: April 28, 2026
Vulnerability identifier: #VU128267
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2026-32630
CWE-ID: CWE-409
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
file-type
How to mitigate CVE-2026-32630
Install security update from vendor's website.
file-type - update to 21.3.2