CVE-2026-41648mediumCWE-770

CVE-2026-41648: medium-severity vulnerability in lxc incus

Incus: Unbounded YAML Metadata Decode via Parsing

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.3%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
lxc · incus
Related CVEs — lxc incus

In the same product, most dangerous first.

CVE-2026-23954HIGHIncus container image templating arbitrary host file read and writeEPSS 0.8%CVE-2026-48769CRITICALIncus has an arbitrary file write on its client due to trusted image hashEPSS 0.7%CVE-2026-48755CRITICALIncus has an argument injection in backup compression algorithm leading to AFW and ACEEPSS 0.7%CVE-2026-48753CRITICALIncus has an arbitrary file write via path traversal in S3 multipart uploadEPSS 0.7%CVE-2026-48752CRITICALIncus has arbitrary file read+write on host via templates/ symlink in malicious imageEPSS 0.7%CVE-2026-48750CRITICALIncus has an arbitrary file write on host via `exec-output` symlink in crafted imageEPSS 0.7%