CVE-2026-87799

Katalog CVE

CVSS 9.9 · Critical EPSS 0,41%

Kerentanan Improper Link Resolution Before File Access ('Link Following'). Skor CVSS 3.1 9.9 (Critical) menurut ubuntu.com.

Deskripsi (NVD)

Improper link resolution in the migration receive path in Canonical LXD versions 4.0 and later (fixed in 4.0.14, 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client that can create instances or custom storage volumes in a project, or a malicious migration source server, to write attacker-controlled files to arbitrary paths on the target host as root, leading to full host compromise. The attacker does this with a crafted rsync or btrfs send stream that plants a symlink in the transferred volume, such as rootfs or root.img, and then writes through it.

Rincian

Terbit di NVD

28 September 2026

Terakhir diubah

29 September 2026

Status NVD

Deferred

CVSS 3.1

9.9 (Critical), sumber ubuntu.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-59: Improper Link Resolution Before File Access ('Link Following')

EPSS (30 hari)

0,41% peluang dieksploitasi; lebih tinggi dari 33,1% 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/canonical/lxd/security/advisories/GHSA-fmc3-3cpq-6whr