CVE-2026-63343

Katalog CVE

CVSS 9.9 · Critical EPSS 0,48%

Kerentanan External Control of File Name or Path. Skor CVSS 3.1 9.9 (Critical) menurut github.com.

Deskripsi (NVD)

Incus is a system container and virtual machine manager. Prior to version 7.3.0, a malicious image containing a `metadata.yaml` symlink pointing to an arbitrary host path allows an authenticated Incus user to read or overwrite any file on the host as root via the instance metadata API. The `exec-output` and `templates/` paths were patched in a prior release using `Lstat` rejection and `os.OpenRoot` confinement; `metadata.yaml` was not included in either patch and remains exploitable. Version 7.3.0 patches the issue.

Rincian

Terbit di NVD

21 Agustus 2026

Terakhir diubah

18 September 2026

Status NVD

Deferred

CVSS 3.1

9.9 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-73: External Control of File Name or Path

EPSS (30 hari)

0,48% peluang dieksploitasi; lebih tinggi dari 39,6% 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/lxc/incus/security/advisories/GHSA-fmjx-5j3g-997p