CVE-2026-115372: Incus 7.3.0 before 7.5.0 Project Restriction Bypass via block.create_options

Severity: high (CVSS 8.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-22 · updated 2026-10-29
Weakness: CWE-88

Description

Incus from 7.3.0 before 7.5.0 contains a project restriction bypass that allows restricted project users to set block.create_options through volume update, copy, and move operations. Attackers can set the option on a custom volume and trigger a copy or move onto a formatting pool to inject arguments into mkfs executed as root.

Affected products

lxc incus: from 7.3.0 before 7.5.0 — fixed in 7.5.0

How to fix

Upgrade to a fixed version: lxc incus 7.5.0. Check the vendor advisory for mitigations.

References

https://github.com/lxc/incus/security/advisories/GHSA-4cph-ccqv-hm3c
https://www.vulncheck.com/advisories/incus-7.3.0-before-7.5.0-project-restriction-bypass-via-block-create-options

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