---
cve: "CVE-2026-75034"
severity: "HIGH"
cvss: 7.4
epss: "0.3%"
vendor: "SUSE"
kev: false
exploited: false
published: "2026-09-03 16:18:22"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-03T15:41:17+02:00"
---

# CVE-2026-75034

> 7.4 HIGH · 🧪 PoC

## Beschreibung

A flaw was found in Rancher Manager. The SAML assertion replay protection introduced by the fix for CVE-2026-44946 recorded consumed assertion IDs in a per-process cache, so each replica only detected replays that reached the same pod. In a high-availability deployment, an attacker holding a captured assertion could replay it once against every other replica to obtain additional authenticated sessions as the victim.


This issue affects Rancher: before 2.15.1.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 8c257d748d23d4812092e28cc92b2a6f3e4dd594 (Commit)

## BSI-Hinweise (deutsch)

- [Rancher: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-3073) — _BSI-Einstufung: hoch_
  Ein Angreifer kann mehrere Schwachstellen in Rancher ausnutzen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen und um Sicherheitsvorkehrungen zu umgehen.

## Referenzen

- <https://github.com/rancher/rancher/releases/tag/v2.15.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-75034) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_