Auth bypass in Mervinpraison Praisonai

CVE-2026-57134

PraisonAI is a multi-agent teams system. From 1.5.1 until 1.7.2, MCPSecurity.evaluatePolicy() in src/praisonai-ts/src/mcp/security.ts invokes the configured credential validator only when AuthMethod is api-key or bearer. Basic and OAuth policies accept any non-empty Authorization header without calling auth.validate(), then return an authenticated result, allowing callers with invalid credentials to access MCP tools and resources protected by those policies. This issue is fixed in version 1.7.2.

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-57134?
CVE-2026-57134 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Improper Authentication. CVSS score: 8.2/10. Published 2026-09-15.
How severe is CVE-2026-57134?
High severity. CVSS v3 base score is 8.2 out of 10.