CVE-2026-42523
In Jenkins GitHub Plugin versions 1.46.0 and earlier, the JavaScript that validates the "GitHub hook trigger for GITScm polling" feature improperly processes the current job URL.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.
GitHub Plugin 1.46.0.1 no longer processes the current job URL as part of JavaScript implementing validation of the feature "GitHub hook trigger for GITScm polling".
CSIRTS triage
- What
- Multiple plugins in Jenkins are affected by various vulnerabilities.
- Who is affected
- Users of the affected Jenkins plugins.
- Urgency
- Remediation is necessary to maintain security, but the severity is currently unknown.
- Action
- Monitor for updates related to the affected plugins.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-42523
Get an email if CVE-2026-42523 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all EPSS-scored CVEs.
Advisory coverage (2)
- criticalGHSA-w22p-4x9f-486v: Jenkins GitHub Plugin has an XSS vulnerabilityghsa · 2026-04-29
- unknownJenkins Security Advisory 2026-04-29jenkins · 2026-04-29
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-42523)