critical
CVE-2026-48750
incus: Incus has an arbitrary file write on host via `exec-output` symlink in crafted image
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
GHSA10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Red Hat9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Trivy's own label is CRITICAL. Rated critical by GHSA, Red Hat.
Description
Incus is a system container and virtual machine manager. Prior to version 7.2.0, the `record-output` parameter of the `/instances/$name/exec` endpoint stores the output of the command in the `exec-output` directory of the instance. If `exec-output` is a symlink, file named `exec_UUID.stdout` and `exec_UUID.stderr` can be written to an arbitrary location where the `.stdout` file will contain arbitrary content. This behavior can be abused for arbitrary command execution. Version 7.2.0 contains a patch.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| go::GitHub Security Advisory Go | github.com/lxc/incus/v7/cmd/incusd | 7.2.0 |
| alpine 3.24 | incus | 7.0.1-r0 |
| alpine edge | incus, incus-feature | 7.0.1-r0 and 1 more |
| debian 12 | lxd | no fix listed |
| debian 13 | incus, lxd | 6.0.4-2+deb13u8 and 1 more |
| debian 14 | incus | 7.0.0-5 |
| echo | incus, lxd | 6.0.4-2+deb13u8 and 1 more |
| rapidfort alpine 3.20 | incus, incus-feature | 7.0.1-r0 and 1 more |
| rapidfort alpine 3.21 | incus, incus-feature | 7.0.1-r0 and 1 more |
| rapidfort alpine 3.22 | incus, incus-feature | 7.0.1-r0 and 1 more |
| rapidfort alpine 3.23 | incus, incus-feature | 7.0.1-r0 and 1 more |
| rapidfort alpine 3.24 | incus, incus-feature | 7.0.1-r0 and 1 more |
Show all 32 entries from 18 sources
| Source | Package | Fixed in |
|---|---|---|
| go::GitHub Security Advisory Go | github.com/lxc/incus/v7/cmd/incusd | 7.2.0 |
| alpine 3.24 | incus | 7.0.1-r0 |
| alpine edge | incus | 7.0.1-r0 |
| alpine edge | incus-feature | 7.2.0-r0 |
| debian 12 | lxd | no fix listed |
| debian 13 | incus | 6.0.4-2+deb13u8 |
| debian 13 | lxd | 5.0.2+git20231211.1364ae4-9+deb13u7 |
| debian 14 | incus | 7.0.0-5 |
| echo | incus | 6.0.4-2+deb13u8 |
| echo | lxd | 5.0.2+git20231211.1364ae4-9+deb13u7 |
| rapidfort alpine 3.20 | incus | 7.0.1-r0 |
| rapidfort alpine 3.20 | incus-feature | 7.2.0-r0 |
| rapidfort alpine 3.21 | incus | 7.0.1-r0 |
| rapidfort alpine 3.21 | incus-feature | 7.2.0-r0 |
| rapidfort alpine 3.22 | incus | 7.0.1-r0 |
| rapidfort alpine 3.22 | incus-feature | 7.2.0-r0 |
| rapidfort alpine 3.23 | incus | 7.0.1-r0 |
| rapidfort alpine 3.23 | incus-feature | 7.2.0-r0 |
| rapidfort alpine 3.24 | incus | 7.0.1-r0 |
| rapidfort alpine 3.24 | incus-feature | 7.2.0-r0 |
| rapidfort debian 12 | incus | 0:6.0.4-2+deb13u8, 0:7.0.0-5 |
| rapidfort debian 12 | lxd | 0:5.0.2+git20231211.1364ae4-9+deb13u7 |
| rapidfort debian 13 | incus | 0:6.0.4-2+deb13u8, 0:7.0.0-5 |
| rapidfort debian 13 | lxd | 0:5.0.2+git20231211.1364ae4-9+deb13u7 |
| rapidfort fedora 43 | incus | 6.23-4.fc43 |
| rapidfort fedora 43 | incus-agent | 6.23-4.fc43 |
| rapidfort fedora 43 | incus-client | 6.23-4.fc43 |
| rapidfort fedora 43 | incus-selinux | 6.23-4.fc43 |
| rapidfort fedora 43 | incus-tools | 6.23-4.fc43 |
| rapidfort ubuntu 20.04 | incus | 0:7.0.0-5 |
| rapidfort ubuntu 22.04 | incus | 0:7.0.0-5 |
| rapidfort ubuntu 24.04 | incus | 0:7.0.0-5 |