CVE Watch13 jul 2026

CVE-2026-39246

decompress before 4.2.2 allows arbitrary symlink creation during archive extraction. When processing symlink entries (type === 'symlink'), t

CVSS

7.5

Alto

EPSS

0.5%

p40

KEV

—

Exploit Today

0-100

Publicado: 9 jul 2026 · Última mod.: 13 jul 2026 · CWE-59

EPSS · 30d

0.2%EPSS · 30 días0.5%

2026-07-102026-07-17

Descripción técnica

decompress before 4.2.2 allows arbitrary symlink creation during archive extraction. When processing symlink entries (type === 'symlink'), the x.linkname field from the archive is passed directly to fs.symlink() without validation (index.js line 121). The preventWritingThroughSymlink check on line 98 only applies to file entries, not symlink creation. An attacker can craft an archive with symlink entries pointing to sensitive files outside the extraction directory (e.g., /etc/passwd), enabling information disclosure when the application reads the extracted contents.

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