CVE-2026-44788 SharpCompress: Directory traversal via directory entries in WriteToDirectory (zip slip variant)

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...

CVE-2026-44788

SharpCompress CVE-2026-44788 describes a path traversal vulnerability in IArchive.WriteToDirectory() (and WriteToDirectoryAsync) that lets untrusted archives create directories outside the extraction root for ZIP and TAR. TAR could escalate to arbitrary file writes via a symlink chain if a Symbol...

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

Summary 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...