CVE-2026-44788
Medium
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.
SeverityMedium
CVSS5.9
Exploit probability—
ProductAdamhathcock Sharpcompress
PublishedMay 26, 2026
First seenMay 26, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- SharpCompress0.48.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| adamhathcock sharpcompress | v ≤ 0.47.4 | — |
| SharpCompressNuGet | v < 0.48.0 | 0.48.0 |
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