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SCA: security update for github.com/lxc/incus/v6/cmd/incus (GHSA-453r-g2pg-cxxq)

high Tenable Cloud Security Plugin ID 439367

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, the web server spawned
 by `incus webui` incorrectly validates the authentication token such that an invalid value will be
 accepted. `incus webui` runs a local web server on a random localhost port. For authentication, it
 provides the user with a URL containing an authentication token. When accessed with that token, Incus
 creates a cookie persisting that token without needing to include it in subsequent HTTP requests. While
 the Incus client correctly validates the value of the cookie, it does not correctly validate the token
 when passed int the URL. This allows for an attacker able to locate and talk to the temporary web server
 on localhost to have as much access to Incus as the user who ran `incus webui`. This can lead to privilege
 escalation by another local user or an access to the user's Incus instances and possibly system resources
 by a remote attack able to trick the local user into interacting with the Incus UI web server. Version
 6.23.0 patches the issue. (CVE-2026-33898)

Solution

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

See Also

https://github.com/advisories/GHSA-453r-g2pg-cxxq

Plugin Details

Severity: High

ID: 439367

Version: Revision 1.4

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: 4.9

Percentile: 57.93

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-33898

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/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-2026-33898

cwe: CWE-287