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CVE Watch29 sept 2026

CVE-2026-87799

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

CVSS

9.9

Crítico

EPSS

0.4%

p32

KEV

—

Exploit Today

10

0-100

Publicado: 28 sept 2026 · Última mod.: 29 sept 2026 · CWE-59

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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.

Referencias oficiales

github.comhttps://github.com/canonical/lxd/security/advisories/GHSA-fmc3-3cpq-6whr

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