CVE-2026-44788: adamhathcock sharpcompress · Path Traversal
Affects adamhathcock sharpcompressSource CVE Database V5
Not known to be exploited · CVSS 5.9 Medium.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:LExploitation evidence
Disclosed: evidence found.
CVE published 26 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| adamhathcocksharpcompress | Affected
| Fixed in– |
NuGetsharpcompresspkg:nuget/sharpcompressOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is available, avoid extracting untrusted TAR archives using SharpCompress versions 0.47.4 or earlier. Consider implementing additional validation or sandboxing extraction operations to limit filesystem access.
Description
SharpCompress versions 0.47.4 and earlier contain a path traversal vulnerability in the IArchive.WriteToDirectory() method. This flaw allows malicious TAR archives to create directories outside the intended extraction root. By chaining with a symlink entry, an attacker can escalate this to arbitrary file writes on the target filesystem, limited by the permissions of the running process. The vulnerability has a medium severity rating with a CVSS score of 5.9.