CVE-2026-57134

PraisonAI MCPSecurity Basic/OAuth authentication policies accept invalid credentials without validation

State: Published
Severity: 8.2 High
Published: Sep 15, 2026
Updated: Sep 15, 2026
Reserved: Jun 24, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N	GitHub_M

Weaknesses

CWE-287 Improper Authentication
CWE-288 Authentication Bypass Using an Alternate Path or Channel
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
PraisonAIMervinPraison	>= 1.5.1, < 1.7.2Affected

References

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