Auth bypass in Mervinpraison Praisonai
CVE-2026-57140
PraisonAI is a multi-agent teams system. From 1.6.0 until 1.7.2, AgentOS in src/praisonai-ts/src/os/agentos.ts uses the 0.0.0.0 default from src/praisonai-ts/src/os/config.ts and registers GET /api/agents and POST /api/chat without authentication middleware. A remote caller who can reach the service can obtain agent names, roles, and instruction prefixes and can invoke a selected agent, potentially reaching its tools, memory, external APIs, credentials, and workflow state. An initial remediation was released in version 1.7.2.
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Mervinpraison Praisonai — versions >= 1.6.0, < 1.7.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-57140?
- CVE-2026-57140 is a critical-severity vulnerability in Mervinpraison Praisonai, classified under Missing Authentication for Critical Function. CVSS score: 9.4/10. Published 2026-09-15.
- How severe is CVE-2026-57140?
- Critical severity. CVSS v3 base score is 9.4 out of 10.