CVE 5.3 MEDIUM

Incus: Unbounded YAML Metadata Decode via Parsing_CVE-2026-41648

5.3 / 10
MEDIUM
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

Description

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.

Basic Information

ID CVE-2026-41648
Source GitHub_M
Published May 7, 2026 at 13:05

Affected Product

Vendor lxc
Product incus
Version < 7.0.0
Affected Versions lxc incus < 7.0.0

CWE Classification

References

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