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CVE-2026-41648

Incus: Unbounded YAML Metadata Decode via Parsing

Published: May 7, 2026Updated: May 7, 2026 Sources: CVE List NVDCWE-770
NVD MITRE
5.0CVSSMEDIUM
EPSS Score
0.3%
Top 81.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-770

Affected Products

incuslxc
Mixed
Cloud & SaaS / container-orchestration
incuslinuxcontainers
Mixed
Cloud & SaaS / container-orchestration
lxcoss-projectCloud & SaaSaka lxc container
linuxcontainersoss-projectCloud & SaaSaka incus, lxc

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/lxc/incus/security/advisories/GHSA-67wx-r9xr-x75x
github.com
https://github.com/lxc/incus/releases/tag/v7.0.0
github.com

Timeline

Published
May 7, 2026
Last Updated
May 7, 2026

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