CVE-2026-84665
Stored XSS in Jenkins SonarQube Scanner Plugin via javascript: dashboard links
Is CVE-2026-84665 being exploited?
Not confirmed. CVE-2026-84665 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-84665?
CVE-2026-84665 is rated High. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-84665?
Yes. A fix has been recorded for CVE-2026-84665. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-84665 affect?
CVE-2026-84665 affects Jenkins SonarQube Scanner Plugin <= 2.18.3, Jenkins instances with the plugin installed. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-84665?
Upgrade plugin to fixed version >2.18.3 or remove the plugin
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Stored XSS: attacker with Item/Configure can inject javascript: links into Jenkins dashboard, execute scripts in users' browsers, steal tokens/credentials and perform UI actions.
Patch when possible
- affected<= 2.18.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.