---
cve: "CVE-2026-84652"
severity: "HIGH"
cvss: 7.3
epss: "47%"
vendor: "Jenkins Project"
kev: false
exploited: false
published: "2026-09-02 16:17:29"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T19:41:26+02:00"
---

# CVE-2026-84652

> 7.3 HIGH

## Beschreibung

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the "remember me" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the "remember me" cookie, grants the attacker access to Jenkins as that user.

## CVSS-Vektor

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

| 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 | Keine | good |

## Patch verfügbar (OSV)

- 01174bc4afa56c25ebb1a92eaa7bd62595044442 (Commit)
- 497de4961ad80d97e26bfdeb0d2e40442a84ecb0 (Commit)

## Referenzen

- <https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4016>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-84652) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_