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CVE-2026-34953— PraisonAI: Authentication Bypass in OAuthManager.validate_token()

CVSS 9.1 · Critical EPSS 0.01% · P3
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I. Basic Information for CVE-2026-34953

Vulnerability Information
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Vulnerability Title
PraisonAI: Authentication Bypass in OAuthManager.validate_token()
Source: NVD (National Vulnerability Database)
Vulnerability Description
PraisonAI is a multi-agent teams system. Prior to version 4.5.97, OAuthManager.validate_token() returns True for any token not found in its internal store, which is empty by default. Any HTTP request to the MCP server with an arbitrary Bearer token is treated as authenticated, granting full access to all registered tools and agent capabilities. This issue has been patched in version 4.5.97.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
PraisonAI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PraisonAI是Mervin Praison个人开发者的一个低代码多智能体协作框架。 PraisonAI 4.5.97之前版本存在安全漏洞，该漏洞源于OAuthManager.validate_token函数对于未在其内部存储中找到的任何令牌均返回True，可能导致任意Bearer令牌被视作已认证，授予对所有注册工具和代理功能的完全访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

VendorProductAffected VersionsCPESubscribe
MervinPraisonPraisonAI < 4.5.97 -

II. Public POCs for CVE-2026-34953

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III. Intelligence Information for CVE-2026-34953

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Same Patch Batch · MervinPraison · 2026-04-03 · 10 CVEs total

CVE-2026-3493810.0 CRITICALPraisonAI: Python Sandbox Escape via str Subclass startswith() Override in execute_code
CVE-2026-349349.8 CRITICALPraisonAI: Second-Order SQL Injection in `get_all_user_threads`
CVE-2026-349359.8 CRITICALPraisonAI: OS Command Injection in MCPHandler.parse_mcp_command()
CVE-2026-349529.1 CRITICALPraisonAI: Missing Authentication in WebSocket Gateway
CVE-2026-349558.8 HIGHPraisonAI: Sandbox Escape via shell=True and Bypassable Blocklist in SubprocessSandbox
CVE-2026-349548.6 HIGHPraisonAI: SSRF in FileTools.download_file() via Unvalidated URL
CVE-2026-349377.8 HIGHPraisonAI: Shell Injection in run_python() via Unescaped $() Substitution
CVE-2026-349367.7 HIGHPraisonAI: SSRF via Unvalidated api_base in passthrough() Fallback
CVE-2026-349396.5 MEDIUMPraisonAI: ReDoS via Unvalidated User-Controlled Regex in MCPToolIndex.search_tools()

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-863

V. Comments for CVE-2026-34953

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