CVE-2026-48753 PUBLISHED

Incus has an arbitrary file write via path traversal in S3 multipart upload

Assigner: GitHub_M
Reserved: 22.05.2026 Published: 21.08.2026 Updated: 21.08.2026

Incus is a system container and virtual machine manager. Prior to version 7.1.0, the S3 protocol upload endpoint is vulnerable to path traversal and allows creation of arbitrary files on the host. This behavior could lead to arbitrary command execution. Version 7.1.0 fixes the issue.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 9.9

Product Status

Vendor lxc
Product incus
Versions
  • Version < 7.1.0 is affected

References

Problem Types

  • CWE-73: External Control of File Name or Path CWE