SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.9epss 0.3%
from disclosure to weapon31 days
Published on NVDMay 26
1st PoC+31d
exploitation probability
0.3%top 76% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L
Affected products
adamhathcock · sharpcompresspublic PoCs found — 1
githubgithub.com/e-corp-demo/CVE-2026-44788★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.