CVE-2026-44788
SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
3th
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.
| CWE | CWE-22 |
| Vendor | adamhathcock |
| Product | sharpcompress |
| Published | May 26, 2026 |
| Last Updated | May 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
adamhathcock / sharpcompress
<= 0.47.4