CVE-2026-76229 Renovate 39.218.0 before 40.33.0 Arbitrary Command Injection via kustomize
Attackers with repository write access can execute arbitrary commands on the Renovate host by crafting malicious kustomization.yaml files.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76229?
CVE-2026-76229 is a high-severity command injection vulnerability in renovatebot renovate, published on 19 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Renovate versions from 39.218.0 before 40.33.0 contain an arbitrary command injection vulnerability in the kustomize manager where user-provided chart names are appended to helm pull commands without proper sanitization. Attackers with repository write access can craft malicious kustomization.yaml files with specially crafted chart names to execute arbitrary commands on the Renovate host machine.
Weakness: CWE-77
Which versions are affected by CVE-2026-76229?
2 open source packages ship an affected version, including renovate.
| Package | Affected | Fixed in |
|---|---|---|
renovate npm | From 39.218.0 | 40.33.0 |
renovate npm | From 39.218.0 | 40.33.0 |
How do I fix CVE-2026-76229?
Upgrade renovate to 40.33.0 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-76229 being exploited?
There is no known exploitation of CVE-2026-76229 in the wild and no public exploit code.
Sources
Also known as GHSA-5gfg-jpw3-fppq, GHSA-xv56-3wq5-9997.