CVE-2026-47766

Katalog CVE

CVSS 5.1 · Medium EPSS 0,20%

Kerentanan UNIX Symbolic Link (Symlink) Following. Skor CVSS 4.0 5.1 (Medium) menurut github.com.

Deskripsi (NVD)

crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -> pts/ptmx` symlink. Version 1.28 fixes the issue.

Rincian

Terbit di NVD

14 Agustus 2026

Terakhir diubah

18 September 2026

Status NVD

Deferred

CVSS 4.0

5.1 (Medium), sumber github.com
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-61: UNIX Symbolic Link (Symlink) Following

EPSS (30 hari)

0,20% peluang dieksploitasi; lebih tinggi dari 8,5% 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/containers/crun/releases/tag/1.28
• https://github.com/containers/crun/security/advisories/GHSA-7vwr-4279-7gq5