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CVE-2026-44788— SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)

CVSS 5.9 · Medium EPSS 0.29% · P20

Affected Version Matrix 1

VendorProductVersion RangeStatus
adamhathcocksharpcompress<= 0.47.4affected
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I. Basic Information for CVE-2026-44788

Vulnerability Information
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Vulnerability Title
SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)
Source: NVD (National Vulnerability Database)
Vulnerability Description
SharpCompress is a fully managed C# library to deal with many compression types and formats. In 0.47.4 and earlier, a path traversal vulnerability in IArchive.WriteToDirectory() allows a malicious archive to create directories outside the intended extraction root. For TAR archives, this can be escalated to arbitrary file writes by chaining with a symlink entry, giving a full write primitive on the target filesystem subject to the permissions of the running process.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
SharpCompress 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SharpCompress是Adam Hathcock个人开发者的一个纯C#压缩库。用于 .NET Standard 2.0、2.1、.NET Core 3.1 和 .NET 5.0 。 SharpCompress 0.47.4及之前版本存在路径遍历漏洞，该漏洞源于IArchive.WriteToDirectory()方法存在路径遍历，可能导致任意文件写入。
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

VendorProductAffected VersionsCPESubscribe
adamhathcocksharpcompress <= 0.47.4 -

II. Public POCs for CVE-2026-44788

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III. Intelligence Information for CVE-2026-44788

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Vendor Advisories for CVE-2026-44788 (1)

IV. Related Vulnerabilities

Same product: sharpcompress
Same vendor: adamhathcock
Same weakness: CWE-22

V. Comments for CVE-2026-44788

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