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.

Project Subscriptions

Vendors Products
Adamhathcock Subscribe
Sharpcompress Subscribe
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-6c8g-7p36-r338 SharpCompress has directory traversal via directory entries in WriteToDirectory (zip slip variant)
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 27 May 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 27 May 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Adamhathcock
Adamhathcock sharpcompress
Vendors & Products Adamhathcock
Adamhathcock sharpcompress

Tue, 26 May 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-27T12:46:16.036Z

Reserved: 2026-05-07T19:20:44.691Z

Link: CVE-2026-44788

cve-icon Vulnrichment

Updated: 2026-05-27T12:46:01.510Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-26T22:16:42.587

Modified: 2026-05-29T16:25:57.843

Link: CVE-2026-44788

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T10:08:11Z

Weaknesses