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SCA: security update for github.com/lxc/incus/v7/cmd/incusd (GHSA-xhqx-mgh3-3h7q)

medium Tenable Cloud Security Plugin ID 443997

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 7.1.0,
 `(*backend).CreateCustomVolumeFromBackup` in `internal/server/storage/backend.go` contains an unguarded
 `*time.Time` dereference on the `ExpiresAt` field of every volume-snapshot entry in an imported custom-
 volume backup. An authenticated user with `can_create_storage_volumes` permission on any project can crash
 the `incusd` daemon by uploading a backup tarball whose `volume_snapshots[*].expires_at` field is absent.
 This is a sibling-field variant of GHSA-r7w7-mmxr-47r9 (CVE-2026-40197). Commit
 `985a1dedf9f3e7ba729c93b654905ed510de25c2` added `if s == nil` at the top of the loop body, but did not
 guard the adjacent `*snapshot.ExpiresAt` deref 19 lines later. Every other consumer of
 `Config.VolumeSnapshots[i].ExpiresAt` in this same file already gates the deref with a nil-check — the
 asymmetric guard is the bug. Version 7.1.0 contains an updated patch. (CVE-2026-48756)

Solution

Update the github.com/lxc/incus/v7/cmd/incusd library and its related packages to version 7.1.0 or later.

See Also

https://github.com/advisories/GHSA-xhqx-mgh3-3h7q

Plugin Details

Severity: Medium

ID: 443997

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 6/26/2026

Updated: 8/24/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.66

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-48756

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: CVSS:3.0/E:U/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:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/26/2026

Vulnerability Publication Date: 6/26/2026

Reference Information

CVE: CVE-2026-48756

cwe: CWE-476