What is CVE-2026-41648?

CVE-2026-41648 is a medium-severity vulnerability in Linuxcontainers Incus, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.0/10. Published 2026-05-07.

How severe is CVE-2026-41648?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Resource exhaustion in Linuxcontainers Incus

CVE-2026-41648

Incus is a system container and virtual machine manager. Prior to version 7.0.0, user provided image and backup tarballs would be unpacked and YAML files parsed without any size restrictions. This was making it easy for an authenticated user to provide a crafted image or backup tarball that when parsed by Incus would lead to a very large YAML document being loaded into memory, potentially causing the entire server to run out of memory. This issue has been patched in version 7.0.0.

Published 2026-05-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.004 (31.0th percentile), scored 2026-09-28.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Linuxcontainers Incus
Lxc Incus — versions < 7.0.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/lxc/incus/security/advisories/GHSA-67wx-r9xr-x75x (Exploit, Mitigation, Vendor Advisory)
github.com/lxc/incus/releases/tag/v7.0.0 (Product, Patch)

Frequently asked questions

What is CVE-2026-41648?: CVE-2026-41648 is a medium-severity vulnerability in Linuxcontainers Incus, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.0/10. Published 2026-05-07.
How severe is CVE-2026-41648?: Medium severity. CVSS v3 base score is 5.0 out of 10.