# CVE-2026-84665: Cross-site scripting in Jenkins SonarQube Scanner Plugin

> Attackers with configure permissions can inject JavaScript into dashboard links, enabling stored XSS attacks against Jenkins users.

- **Severity:** High 8.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Sep 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-cqmc-x8fm-wq36

## What is CVE-2026-84665?

CVE-2026-84665 is a high-severity cross-site scripting vulnerability in Jenkins SonarQube Scanner Plugin, published on 2 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Jenkins SonarQube Scanner Plugin 2.18.3 and earlier does not limit URL schemes for the dashboard links it creates based on SonarQube scanner results, allowing the `javascript:` scheme, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-84665?


## How do I fix CVE-2026-84665?

No fix has been published for CVE-2026-84665 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84665 being exploited?

There is no known exploitation of CVE-2026-84665 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84665 and fix it if it is affected.

What it is: CVE-2026-84665 is a high-severity cross-site scripting vulnerability in Jenkins SonarQube Scanner Plugin, published on 2 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-84665 in the wild and no public exploit code.

Affected product: Jenkins SonarQube Scanner 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-2026-84665/ (Markdown: https://insights.sbomify.com/CVE-2026-84665/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84665
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84665
- OSV: https://osv.dev/vulnerability/CVE-2026-84665

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-84665/
Summaries are generated and may contain mistakes; the official description above is the record.