---
cve: "CVE-2026-27099"
severity: "HIGH"
cvss: 8.0
epss: "0.5%"
vendor: "Jenkins Project"
kev: false
exploited: false
published: "2026-02-18 15:18:43"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T17:41:41+02:00"
---

# CVE-2026-27099

> 8.0 HIGH

## Beschreibung

Jenkins 2.483 through 2.550 (both inclusive), LTS 2.492.1 through 2.541.1 (both inclusive) does not escape the user-provided description of the "Mark temporarily offline" offline cause, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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 | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 714eeca02d35290fafb5f46dfa5a7ac1e4f26bab (Commit)
- fc71f0677ff81340ba7eb19b2d571fb9af230437 (Commit)

## Referenzen

- <https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27099) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_