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CVE-2026-44788

SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)

Published: May 26, 2026Updated: May 26, 2026 Sources: CVE List NVD
NVD MITRE
5.9CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:NI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:LAvailability
Low

Weaknesses

CWE-22

Affected Products

sharpcompress
adamhathcock

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
github.com

Timeline

Published
May 26, 2026
Last Updated
May 26, 2026

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