CVE-2026-76233 Renovate 39.53.0 before 40.33.0 Command Injection via gleam manager
Attackers with repository write access can execute arbitrary commands on the Renovate host by crafting malicious gleam.toml 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-2026-76233?
CVE-2026-76233 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 39.53.0 before 40.33.0 contain a command injection vulnerability in the gleam manager where the depName parameter is appended to gleam deps update commands without proper sanitization. Attackers with repository write access can craft malicious gleam.toml files to execute arbitrary commands on the machine running Renovate.
Weakness: CWE-77
Which versions are affected by CVE-2026-76233?
2 open source packages ship an affected version, including renovate.
| Package | Affected | Fixed in |
|---|---|---|
renovate npm | From 39.53.0 | 40.33.0 |
renovate npm | From 39.53.0 | 40.33.0 |
How do I fix CVE-2026-76233?
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-2026-76233 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76233 exists.
Sources
Also known as GHSA-xjr7-3c3g-m763, GHSA-xmpw-q5r4-p783.