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SCA: security update for github.com/lxc/incus/v6 (GHSA-83xr-5xxr-mh92)

critical Tenable Cloud Security Plugin ID 439362

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Incus is a system container and virtual machine manager. Prior to version 6.23.0, instance template files
 can be used to cause arbitrary read or writes as root on the host server. Incus allows for pongo2
 templates within instances which can be used at various times in the instance lifecycle to template files
 inside of the instance. This particular implementation of pongo2 within Incus allowed for file read/write
 but with the expectation that the pongo2 chroot feature would isolate all such access to the instance's
 filesystem. This was allowed such that a template could theoretically read a file and then generate a new
 version of said file. Unfortunately the chroot isolation mechanism is entirely skipped by pongo2 leading
 to easy access to the entire system's filesystem with root privileges. Version 6.23.0 patches the issue.
 (CVE-2026-33897)

Solution

Update the github.com/lxc/incus/v6 library and its related packages to version 6.23.0 or later.

See Also

https://github.com/advisories/GHSA-83xr-5xxr-mh92

Plugin Details

Severity: Critical

ID: 439362

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 3/27/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.39

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-33897

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.6

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/27/2026

Vulnerability Publication Date: 3/26/2026

Reference Information

CVE: CVE-2026-33897