---
cve: "CVE-2026-70454"
severity: "HIGH"
cvss: 7.6
epss: "19%"
vendor: "RsyncProject"
kev: false
exploited: false
published: "2026-08-13 15:19:59"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T03:20:53+02:00"
---

# CVE-2026-70454

> 7.6 HIGH · 🧪 PoC

## Beschreibung

rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. Attackers can exploit the failure to validate server TLS certificates against a trusted CA or verify certificate hostname matching to decrypt or tamper with rsync session content without detection by the client.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- e94bad1c156fc3910f24e2b3b71a81b0b0bdeb70 (Commit)
- f26f747b8017b321d3776becc69f330dd889fa21 (Commit)

## Referenzen

- <https://github.com/RsyncProject/rsync/security/advisories/GHSA-3c3x-ww2w-5r5p>
- <https://github.com/RsyncProject/rsync/releases/tag/v3.5.0>
- <https://www.vulncheck.com/advisories/rsync-tls-certificate-validation-bypass-via-ssl-openssl-mode>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-70454) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_