CVE-2026-41685

Description

Incus is a system container and virtual machine manager. Prior to version 7.0.0, uploads of large amount of data by authenticated users can run the Incus server out of disk space, potentially taking down the host system. The impact here is limited for anyone using storage.images_volume and storage.backups_volume as those users will have large uploads be stored on those volumes rather than directly on the host filesystem. This is the default behavior on IncusOS. This issue has been patched in version 7.0.0.

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
linuxcontainers	incus	< 7.0.0

References

Advisories & Patches

https://github.com/lxc/incus/releases/tag/v7.0.0 https://github.com/lxc/incus/security/advisories/GHSA-98vh-x9cx-9cfp https://github.com/lxc/incus/security/advisories/GHSA-98vh-x9cx-9cfp

Exploits

https://github.com/lxc/incus/security/advisories/GHSA-98vh-x9cx-9cfp https://github.com/lxc/incus/security/advisories/GHSA-98vh-x9cx-9cfp

Frequently Asked Questions

What is CVE-2026-41685? +

Incus is a system container and virtual machine manager. Prior to version 7.0.0, uploads of large amount of data by authenticated users can run the Incus server out of disk space, potentially taking down the host system. The impact here is limited for anyone using storage.images_volume and storage.backups_volume as those users will have large uploads be stored on those volumes rather than directly on the host filesystem. This is the default behavior on IncusOS. This issue has been patched in version 7.0.0. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-41685? +

CVE-2026-41685 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41685? +

CVE-2026-41685 affects products from linuxcontainers, specifically: incus. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41685? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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