CVE-2026-44788

MediumCVSS 6.5/10Last modified Jul 24, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-22

Affected software

Vendor	Product	Versions
adamhathcock	sharpcompress	<= 0.47.4

References

https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338Exploit, Mitigation, Vendor Advisory
https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338Exploit, Mitigation, Vendor Advisory

Timeline

Published: May 26, 2026
Last modified: Jul 24, 2026
NVD status: Analyzed

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