CVE-2026-55526: Mervinpraison Praisonai

High severity, CVSS 8.5. EPSS: 0.4% chance of exploitation in the next 30 days.

PraisonAI is a multi-agent teams system. Prior to praisonaiagents 1.6.58, spider_tools._host_is_blocked() does not resolve ordinary hostnames before scrape_page fetches them. A hostname such as 127.0.0.1.nip.io passes validation and resolves to loopback, permitting internal HTTP access. The fix uses socket.getaddrinfo and fails closed on DNS errors. This issue is fixed in version 1.6.58.

Affected products

• Mervinpraison Praisonai: before 4.6.58 (fixed in 4.6.58)
• Mervinpraison Praisonaiagents: before 1.6.58 (fixed in 1.6.58)

Published 2026-08-25. Last modified 2026-09-09.