CVE-2026-85396

Katalog CVE

CVSS 7.5 · High EPSS 0,56%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). Skor CVSS 3.1 7.5 (High) menurut vulncheck.com.

Deskripsi (NVD)

rubyzip versions before 3.4.0 contain a path traversal vulnerability in Zip::Entry#extract that fails to properly validate extraction paths using prefix comparison without trailing separators. Attackers can craft archive entries with names like ../upload_backup/owned.sh to write files outside the intended extraction directory into sibling paths sharing the destination prefix.

Rincian

Terbit di NVD

3 September 2026

Terakhir diubah

24 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

7.5 (High), sumber vulncheck.com
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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

EPSS (30 hari)

0,56% peluang dieksploitasi; lebih tinggi dari 45,3% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/geo-chen/oss/blob/main/rubyzip.md
• https://github.com/rubyzip/rubyzip
• https://github.com/rubyzip/rubyzip/blob/v3.3.1/lib/zip/entry.rb
• https://github.com/rubyzip/rubyzip/commit/17edfbf4423b83211b075acc23a7d8640da63449
• https://github.com/rubyzip/rubyzip/releases/tag/v3.4.0
• https://www.vulncheck.com/advisories/rubyzip-before-3.4.0-path-traversal-in-zip-entry-extract-via-sibling-dire...