---
cve: "CVE-2026-22239"
severity: "CRITICAL"
cvss: 10.0
epss: "0.3%"
vendor: "Bluspark Global"
kev: false
exploited: false
published: "2026-01-14 14:40:20"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-11-09T18:13:28+01:00"
---

# CVE-2026-22239

> 10.0 CRITICAL

## Beschreibung

The vulnerability exists in BLUVOYIX due to design flaws in the email sending API. An unauthenticated remote attacker could exploit this vulnerability by sending specially crafted HTTP requests to the vulnerable email sending API. Successful exploitation of this vulnerability could allow the attacker to send unsolicited emails to anyone on behalf of the company.

## CNA-Record (Kanon, cvelistV5)

- CNA: **MHV**
- State: PUBLISHED
- Stand: 2026-01-14 14:56:01
- CNA-CVSS: **10.0** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/RE:H/U:Amber`)

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/RE:H/U:Amber
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Schwachstellen-Klasse

- **CWE-400** — Uncontrolled Resource Consumption
  The product does not properly control the allocation and maintenance of a limited resource.

## Angriffsmuster (CAPEC)

- [CAPEC-147 — XML Ping of the Death](https://capec.mitre.org/data/definitions/147.html) _(Severity: Medium)_
- [CAPEC-227 — Sustained Client Engagement](https://capec.mitre.org/data/definitions/227.html)
- [CAPEC-492 — Regular Expression Exponential Blowup](https://capec.mitre.org/data/definitions/492.html)

## ATT&CK-Techniken

- [T1499 — Endpoint Denial of Service](https://attack.mitre.org/techniques/T1499/)

## Referenzen

- <https://blusparkglobal.com/bluvoyix/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-22239/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_