CVE-2026-88886 Renovate before 44.14.7 Command Injection via gradle-wrapper
Attackers can execute arbitrary commands via crafted Gradle wrapper URLs in self-hosted Renovate deployments with unsafe executions enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88886?
CVE-2026-88886 is a high-severity command injection vulnerability in mend-renovate-ce, published on 10 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Renovate is a dependency update automation tool. In versions before 44.14.7 (and in Mend Renovate CE/EE distributions before 15.4.0, and the mend-renovate-enterprise-edition Helm chart before 10.4.0), the manager/gradle-wrapper module does not escape the distributionUrl value read from a repository's gradle/wrapper/gradle-wrapper.properties file before invoking the Gradle Wrapper CLI. In self-hosted deployments configured with binarySource=docker and allowedUnsafeExecutions=['gradleWrapper', ...], a repository that supplies a crafted distributionUrl (for example, appending a shell metacharacter and command) can cause arbitrary commands to be executed as the Renovate user when Renovate processes a Gradle Wrapper update. The issue is fixed in Renovate 44.14.7; as a workaround, remove 'gradleWrapper' from allowedUnsafeExecutions.
Weakness: CWE-78
Which versions are affected by CVE-2026-88886?
How do I fix CVE-2026-88886?
No fix has been published for CVE-2026-88886 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-88886 being exploited?
There is no known exploitation of CVE-2026-88886 in the wild and no public exploit code.
Sources
Also known as GHSA-5m6m-mfxc-qh95, GHSA-7chm-46wx-888m.