Vulnerability in Mervinpraison Praisonai
CVE-2026-61428
PraisonAI AgentMail versions before 4.6.78 lack signature verification in webhook mode, allowing unauthenticated attackers to inject messages with spoofed sender addresses. Attackers can POST crafted message.received events to the webhook endpoint to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses, bypassing sender allow/block lists.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (29.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Mervinpraison Praisonai — versions 0, 4.6.78
Weakness classification (CWE)
References
- github.com/MervinPraison/PraisonAI/security/advisories/GHSA-qj9c-59p6-8cgx (vendor-advisory)
- www.vulncheck.com/advisories/praisonai-agentmail-before-message-injection-via-w… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-61428?
- CVE-2026-61428 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Authentication Bypass by Spoofing. CVSS score: 7.3/10. Published 2026-07-11.
- How severe is CVE-2026-61428?
- High severity. CVSS v3 base score is 7.3 out of 10.