CVE-2026-115377 Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Symlink in Migration Stream
Critical 9.4
Published
Updated
Check this codebase for CVE-2026-115377 and fix it if it is affected.
What it is: CVE-2026-115377 is a critical vulnerability in lxc incus, published on 22 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-115377 in the wild and no public exploit code.
Affected product: lxc incus. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-115377/ (Markdown: https://insights.sbomify.com/CVE-2026-115377/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-115377?
CVE-2026-115377 is a critical vulnerability in lxc incus, published on 22 Oct 2026.
Official description
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
Weakness: CWE-59
Which versions are affected by CVE-2026-115377?
How do I fix CVE-2026-115377?
Upgrade to a fixed version.
Is CVE-2026-115377 being exploited?
There is no known exploitation of CVE-2026-115377 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-115377, GHSA-579w-c4rw-c8q3, GHSA-9c3h-632w-7845, UBUNTU-CVE-2026-115377.