Auth bypass in Mervinpraison Praisonai
CVE-2026-57116
PraisonAI is a multi-agent teams system. From version 4.2.1 to before version 4.6.59, PraisonAI's AgentOS FastAPI deployment surface remains unauthenticated in current main and in releases after the published patched version for GHSA-pm96-6xpr-978x / CVE-2026-40151. The chat route directly calls agent.chat(request.message). No-auth and wrong-bearer requests both execute the deployed agent. This is broader than passive metadata disclosure. In any deployment where AgentOS wraps agents with tools, private context, memory, API integrations, or cost-bearing model calls, an unauthenticated reachable client can drive those agents. This issue has been patched in version 4.6.59.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Mervinpraison Praisonai — versions >= 4.2.1, < 4.6.59
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-57116?
- CVE-2026-57116 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Information Disclosure. CVSS score: 9.8/10. Published 2026-10-23.
- How severe is CVE-2026-57116?
- Critical severity. CVSS v3 base score is 9.8 out of 10.