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...

CVE-2026-39243

decompress before 4.2.2 allows arbitrary hardlink creation during archive extraction, enabling file read disclosure and file corruption. When processing hardlink entries type === 'link', the x.linkname field from the archive is passed directly to fs.link without validation index.js line 113. An...