# 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.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Apr 2026
- **Updated:** 7 Apr 2026
- **Also known as:** GHSA-wpwf-v25w-54g3

## 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.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-5739?

2 open source packages ship an affected version, including tech.powerjob:powerjob-server-starter.


| Package | Ecosystem | 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.

## Is CVE-2026-5739 being exploited?

There is no known exploitation of CVE-2026-5739 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5739 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-5739 in the wild and no public exploit code.

Affected packages and fixed versions:
- tech.powerjob:powerjob-server-starter (Maven): affected from 5.1.0 up to 5.1.2; no fix listed
- tech.powerjob:powerjob-server-starter (Maven): affected from 5.1.0 up to 5.1.2; no fix listed

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-2026-5739/ (Markdown: https://insights.sbomify.com/CVE-2026-5739/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5739
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5739
- OSV: https://osv.dev/vulnerability/CVE-2026-5739

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5739/
Summaries are generated and may contain mistakes; the official description above is the record.