CVE-2026-39243

A flaw was found in decompress. An attacker can craft a malicious archive that, when extracted, allows for arbitrary hardlink creation. This vulnerability occurs because the x.linkname field from hardlink entries in the archive is processed without proper validation, enabling an attacker to creat...

PT-2026-56968

Name of the Vulnerable Software and Affected Versions decompress versions prior to 4.2.2 Description An issue exists during archive extraction where arbitrary hardlink creation is possible. When processing hardlink entries type === 'link', the x.linkname field from the archive is passed directly ...

EUVD-2026-31777

Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory. makespecialfile passes the tar header's linkname to link without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode...

CVE-2026-42496 Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory

Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. makespecialfile passes the tar header's linkname to symlink without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular...