Skip to content
Fencer Vulns
critical 9.9

CVE-2026-48755 json

Incus has an argument injection in backup compression algorithm leading to AFW and ACE

published 2026-06-26 4 mo ago modified 2026-11-06 3 d ago also EUVD-2026-63982 , GHSA-v6mj-8pf4-hhw4 , GO-2026-5808

cvss
9.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Incus is a system container and virtual machine manager. Prior to version 7.1.0, improper validation of user-provided backup compression algorithm leads to argument injection in the constructed command line. This leads to an arbitrary file write on the host, possibly leading to arbitrary command execution. Version 7.1.0 patches the issue.

Patch / fix

  • go github.com/lxc/incus/v7/cmd/incusd 7.2.0
  • go github.com/lxc/incus/v7 7.2.0
  • linuxcontainers incus 7.2.0
  • lxd Debian 13 5.0.2+git20231211.1364ae4-9+deb13u7
  • incus Debian 13 6.0.4-2+deb13u8
  • incus Debian 14 7.0.0-5

debian advisories DEBIAN-CVE-2026-48755

  • incus openSUSE Tumbleweed 7.4-1.1
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:11651-1openSUSE-SU-2026:21483-1

  • incus Alpine 3.24 7.0.1-r0

alpine advisories ALPINE-CVE-2026-48755

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-48755 updated cvss 9.9

incus: Incus has an argument injection in backup compression algorithm leading to AFW and ACE

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/lxc/incus/v7/cmd/incusd
<7.2.0
7.2.0
go github.com/lxc/incus
all versions
 no fix listed
go github.com/lxc/incus/v6
all versions
 no fix listed
go github.com/lxc/incus/v7
<7.2.0
7.2.0

Affected products

  • lxc incus
  • canonical lxd

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.