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SCA: security update for github.com/lxc/incus/v6/cmd/incusd (GHSA-8gw4-p4wq-4hcv)

medium Tenable Self-Hosted Container Security Plugin ID 441061

Description

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

 - Incus is an open source container and virtual machine manager. In versions prior to 7.0.0, the image
 import flow issues an outbound HEAD request to a user-supplied URL before validating the request against
 project restrictions such as restricted.images.servers. The imgPostURLInfo function constructs and sends a
 HEAD request directly from the attacker-supplied source URL to resolve image metadata, and this network
 interaction occurs before the flow reaches the point where the import would be rejected by policy.
 Although the actual image download is blocked by the project restriction, an authenticated user can coerce
 the daemon into making blind HEAD requests to arbitrary destinations. These requests include server
 metadata in custom headers (Incus-Server-Architectures, Incus-Server-Version), which discloses information
 about the host environment to the attacker-controlled endpoint. This blind SSRF primitive can be used to
 probe internal services, unroutable address space, or cloud metadata endpoints reachable from the host.
 This vulnerability pattern is similar to CVE-2026-24767. This issue has been fixed in version 7.0.0.
 (CVE-2026-35527)

Solution

Update the github.com/lxc/incus/v6/cmd/incusd library and its related packages to version 7.0.0 or later.

See Also

https://github.com/advisories/GHSA-8gw4-p4wq-4hcv

Plugin Details

Severity: Medium

ID: 441061

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 5/4/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.77

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

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

CVSS Score Source: CVE-2026-35527

CVSS v3

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.5

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.3

Threat Score: 2.1

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/4/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-35527

cwe: CWE-918