CVE-2026-49991

Katalog CVE

CVSS 8.6 · High EPSS 0,42%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'). Skor CVSS 3.1 8.6 (High) menurut github.com.

Deskripsi (NVD)

RustFS is a distributed object storage system built in Rust. In 1.0.0-beta.4, authenticated users with only PutObject permission on their own bucket can exploit a path traversal vulnerability in the Snowball auto-extract feature to write arbitrary objects into other users' buckets, completely breaking multi-tenant isolation. The vulnerability chains three flaws: No ../ sanitization in tar entry key normalization; IAM wildcard matching uses raw (uncleaned) paths; and Filesystem path cleaning resolves ../ across bucket boundaries.

Rincian

Terbit di NVD

26 Juni 2026

Terakhir diubah

29 Juni 2026

Status NVD

Deferred

CVSS 3.1

8.6 (High), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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')
CWE-862: Missing Authorization

EPSS (30 hari)

0,42% peluang dieksploitasi; lebih tinggi dari 34,0% 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/rustfs/rustfs/security/advisories/GHSA-f4vq-9ffr-m8m3