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CVE-2026-32630— file-type affected by ZIP Decompression Bomb DoS via [Content_Types].xml entry

Quick assessment

Affected
sindresorhus file-type
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

file type是Sindre Sorhus个人开发者的一个文件类型检测工具。 file type 20.0.0版本至21.3.1版本存在安全漏洞，该漏洞源于特制ZIP文件在使用fileTypeFromBuffer、fileTypeFromBlob或fileTypeFromFile进行类型检测时可能触发内存过度增长，基于流的检测强制执行ZIP解压缩输出限制，但对已知大小的输入未强制执行，可能导致小型压缩ZIP使file-type在处理基于ZIP的格式时解压缩和处理更大的有效载荷。

CVSS 5.3 · Medium EPSS 0.43% · P35
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I. Basic Information for CVE-2026-32630

Vulnerability Information
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Vulnerability Title
file-type affected by ZIP Decompression Bomb DoS via [Content_Types].xml entry
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
file type 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
file type是Sindre Sorhus个人开发者的一个文件类型检测工具。 file type 20.0.0版本至21.3.1版本存在安全漏洞，该漏洞源于特制ZIP文件在使用fileTypeFromBuffer、fileTypeFromBlob或fileTypeFromFile进行类型检测时可能触发内存过度增长，基于流的检测强制执行ZIP解压缩输出限制，但对已知大小的输入未强制执行，可能导致小型压缩ZIP使file-type在处理基于ZIP的格式时解压缩和处理更大的有效载荷。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sindresorhus file-type >= 20.0.0, < 21.3.2 -

II. Public POCs for CVE-2026-32630

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III. Intelligence Information for CVE-2026-32630

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Patches & Fixes for CVE-2026-32630 (1)

Vendor Advisories for CVE-2026-32630 (1)

IV. Related Vulnerabilities

Same product: file-type
Same vendor: sindresorhus
Same weakness: CWE-409

V. Comments for CVE-2026-32630

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