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.
- 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
- None listed
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
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.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-84665 being exploited?
There is no known exploitation of CVE-2026-84665 in the wild and no public exploit code.
Sources
Also known as GHSA-cqmc-x8fm-wq36.