CVE-2026-42497

Katalog CVE

CVSS 7.5 · High EPSS 0,47%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada archive . Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory. _make_special_file() 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. A subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone.

Rincian

Terbit di NVD

26 Mei 2026

Terakhir diubah

24 Juli 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-59: Improper Link Resolution Before File Access ('Link Following')
CWE-732: Incorrect Permission Assignment for Critical Resource

EPSS (30 hari)

0,47% peluang dieksploitasi; lebih tinggi dari 38,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch patch
• https://www.cve.org/CVERecord?id=CVE-2026-42496 advisory pihak ketiga
• https://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes release notes