CVE-2026-61439: Mervinpraison Praisonai

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

PraisonAI versions before 4.6.78 contain a prompt injection defense misconfiguration where the block threshold defaults to CRITICAL severity, allowing HIGH-level threats to pass through unblocked. Attackers can submit single-vector prompt injection attacks such as instruction overrides or financial manipulation that trigger HIGH severity detection but are logged without blocking, enabling system prompt extraction and unauthorized tool invocations.

Affected products

• Mervinpraison Praisonai: before 4.6.78 (fixed in 4.6.78)

Published 2026-07-11. Last modified 2026-07-14.