---
cve: "CVE-2026-42523"
severity: "CRITICAL"
cvss: 9.0
epss: "28%"
vendor: "Jenkins Project"
kev: false
exploited: false
published: "2026-04-29 14:16:19"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T22:49:47+02:00"
---

# CVE-2026-42523

> 9.0 CRITICAL

## Beschreibung

Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing validation of the feature "GitHub hook trigger for GITScm polling", resulting in a stored cross-site scripting (XSS) vulnerability exploitable by non-anonymous attackers with Overall/Read permission.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 417b7dbbb12dd826696082fccf050989b5c28e0f (Commit)

## Referenzen

- <https://www.jenkins.io/security/advisory/2026-04-29/#SECURITY-3704>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-42523) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_