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CVE-2026-44788

27
FAUCET Score

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.

First published: May 26, 2026Last modified: May 26, 2026

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.47.4CPE matchmatch criteria
cpe:2.3:a:adamhathcock:sharpcompress:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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 Impact
NONE
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 24th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

nugetpatch availablevia ghsa
Product: SharpCompressFixed in: 0.48.0
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (1)

nugetGHSA-6c8g-7p36-r338medium

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

May 8, 2026

References

github.com / adamhathcock/sharpcompress/security/advisories/GHSA-6c8g-7p36-r338
ExploitMitigationVendor Advisory