Critical [CVE-2026-48755] Incus has an argument injection in backup compression algorithm leading to AFW and ACE
This critical-severity Red Hat Linux advisory covers CVE-2026-48755.
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Summary
Incus is a system container and virtual machine manager. Prior to version 7.1.0, improper validation of user-provided backup compression algorithm leads to argument injection in the constructed command line.
This leads to an arbitrary file write on the host, possibly leading to arbitrary command execution. Version 7.1.0 patches the issue.
Incus is not shipped in any Red Hat product. The community Fedora package is affected.
Red Hat severity: Critical — CVSS 9.9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H). Weakness: CWE-88.
- < 7.1.0
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- No mitigation is needed as Incus is not shipped in any Red Hat product.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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