Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

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

Quick assessment

Affected
adamhathcock sharpcompress
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.

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。

CVSS 5.9 · Medium EPSS 0.31% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
adamhathcock sharpcompress <= 0.47.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-44788

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
adamhathcock sharpcompress <= 0.47.4 -

II. Public POCs for CVE-2026-44788

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-44788

请登录查看更多情报信息。

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

No comments yet

Leave a comment