CVE-2026-5739 PowerJob OpenAPI Endpoint addWorkflowNode GroovyEvaluator.evaluate code injection
Remote attackers can execute arbitrary code via the addWorkflowNode OpenAPI endpoint in PowerJob due to unsafe Groovy evaluation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5739?
CVE-2026-5739 is a medium-severity code injection vulnerability in PowerJob, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in PowerJob 5.1.0/5.1.1/5.1.2. The affected element is the function GroovyEvaluator.evaluate of the file /openApi/addWorkflowNode of the component OpenAPI Endpoint. The manipulation of the argument nodeParams results in code injection. The attack can be executed remotely. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-5739?
2 open source packages ship an affected version, including tech.powerjob:powerjob-server-starter.
| Package | Affected | Fixed in |
|---|---|---|
tech.powerjob:powerjob-server-starter Maven | From 5.1.0 to 5.1.2 | None |
tech.powerjob:powerjob-server-starter Maven | From 5.1.0 to 5.1.2 | None |
How do I fix CVE-2026-5739?
No fix has been published for CVE-2026-5739 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-5739 being exploited?
There is no known exploitation of CVE-2026-5739 in the wild and no public exploit code.
Sources
Also known as GHSA-wpwf-v25w-54g3.