CVE-2026-44788

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338	Exploit Mitigation Vendor Advisory
https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:adamhathcock:sharpcompress:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-26 22:16

Updated : 2026-07-24 11:10

NVD link : CVE-2026-44788

Mitre link : CVE-2026-44788

CVE.ORG link : CVE-2026-44788

JSON object : View

Products Affected

adamhathcock

sharpcompress

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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