---
cve: "CVE-2026-61436"
severity: "HIGH"
cvss: 8.8
epss: "29%"
vendor: "mervinpraison"
kev: false
exploited: false
published: "2026-07-15 12:18:18"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T18:01:08+02:00"
---

# CVE-2026-61436

> 8.8 HIGH · 🧪 PoC

## Beschreibung

PraisonAI before 4.6.78 fails to verify Svix webhook signatures in AgentMail webhook mode, allowing unauthenticated attackers to forge message.received events. Attackers can send crafted JSON payloads to the webhook endpoint to invoke configured agents with arbitrary sender addresses and message content.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 393de394087e3badc79acfec490323bcc99638bd (Commit)
- 2a855c470077c7d2e2479a575f7ef7f548d51c33 (Commit)

## Referenzen

- <https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-7c92-x8vg-4258>
- <https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753>
- <https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33>
- <https://www.vulncheck.com/advisories/praisonai-before-missing-webhook-signature-verification>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-61436) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_