# CVE-2026-92128: Code injection in Jenkins Script Security Plugin

> Attackers can execute arbitrary code on the Jenkins controller by exploiting a race condition in JAR file downloading and classpath loading.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Sep 2026
- **Updated:** 16 Sep 2026
- **Also known as:** GHSA-5gc7-28q4-677m

## What is CVE-2026-92128?

CVE-2026-92128 is a high-severity code injection vulnerability in Jenkins Script Security Plugin, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Jenkins Script Security Plugin 1415.v9a_f9b_3a_c253d and earlier downloads a JAR file specified by URL twice, confirming the approval of the first download and loading the classpath entries from the second, allowing attackers able to define classpath entries to execute arbitrary code in the context of the Jenkins controller JVM.

Weakness: CWE-494 (Download of Code Without Integrity Check)

## Which versions are affected by CVE-2026-92128?

It affects 1 product.


Products: Jenkins Script Security.

## How do I fix CVE-2026-92128?

No fix has been published for CVE-2026-92128 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-92128 being exploited?

There is no known exploitation of CVE-2026-92128 in the wild and no public exploit code.

## Other vulnerabilities in Jenkins Script Security Plugin

- [CVE-2019-1003029](https://insights.sbomify.com/CVE-2019-1003029/): Jenkins Script Security Plugin Sandbox Bypass (critical 9.9, exploited in the wild)
- [CVE-2022-43401](https://insights.sbomify.com/CVE-2022-43401/): Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin (critical 9.9)
- [CVE-2022-43403](https://insights.sbomify.com/CVE-2022-43403/): Jenkins Script Security Plugin sandbox bypass vulnerability (critical 9.9)
- [CVE-2022-43404](https://insights.sbomify.com/CVE-2022-43404/): Sandbox bypass vulnerabilities in Jenkins Script Security Plugin and in Pipeline: Groovy Plugin (critical 9.9)
- [CVE-2020-2279](https://insights.sbomify.com/CVE-2020-2279/): Sandbox bypass vulnerability in Jenkins Script Security Plugin (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-92128 and fix it if it is affected.

What it is: CVE-2026-92128 is a high-severity code injection vulnerability in Jenkins Script Security Plugin, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-92128 in the wild and no public exploit code.

Affected product: Jenkins Script Security Plugin. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2026-92128/ (Markdown: https://insights.sbomify.com/CVE-2026-92128/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-92128
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-92128
- OSV: https://osv.dev/vulnerability/CVE-2026-92128

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-92128/
Summaries are generated and may contain mistakes; the official description above is the record.