Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Incus, the github.com/lxc/incus/v6 package versions before 6.23.0, and the github.com/lxc/incus package at version 0.7.0 and earlier, are affected. Instance template files can cause arbitrary file reads and writes as root on the host, because the pongo2 chroot isolation is bypassed. The source does not say what level of access an attacker needs to supply such templates. Upgrade github.com/lxc/incus/v6 to 6.23.0 or later; no fixed version is listed for github.com/lxc/incus.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 10.0 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0050, the 43rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:08 UTC First seen by agentprime
- 31 Oct 2026, 15:08 UTC Confirmed by OSV