CVE-2026-44788

5.9 MEDIUM

SharpCompress is a fully managed C# library to deal with many compression types and formats

Published: 2026-05-26 · Last updated: 2026-06-05

Severity and scoring

CVSS: 5.9 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L
CWE: CWE-22

Affected products

Vendor	Product
adamhathcock	sharpcompress

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

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-44788
[Vendor advisory]https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
[Vendor advisory]https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338

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CVE-2018-1002206 — SharpCompress before 0.21.0 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a ../ (dot dot slash... (5.5 MEDIUM)

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