SB2026051198 - Multiple vulnerabilities in sharpcompress
Published: May 11, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Path traversal (CVE-ID: CVE-2026-44788)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to create directories outside the intended extraction root.
The vulnerability exists due to path traversal in IArchive.WriteToDirectory() when extracting a crafted archive. A remote attacker can supply a specially crafted archive with traversal or absolute-path directory entries to create directories outside the intended extraction root.
User interaction is required to process the crafted archive.
2) Path traversal (CVE-ID: N/A)
CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to write arbitrary files outside the intended extraction root.
The vulnerability exists due to improper neutralization of symlink targets in TAR archive extraction when processing a crafted TAR archive with a caller-supplied SymbolicLinkHandler. A remote attacker can include a symlink entry and a subsequent file entry in a crafted TAR archive to write arbitrary files outside the intended extraction root.
This issue affects TAR archives only when the caller provides a SymbolicLinkHandler, and user interaction is required to process the crafted archive.
Remediation
Install update from vendor's website.