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

Quick assessment

Affected
MervinPraison PraisonAI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

CVSS 9.1 · Critical EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
MervinPraison PraisonAI < 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-2026-34938 10.0 CRITICAL PraisonAI: Python Sandbox Escape via str Subclass startswith() Override in execute_code
CVE-2026-34934 9.8 CRITICAL PraisonAI: Second-Order SQL Injection in `get_all_user_threads`
CVE-2026-34935 9.8 CRITICAL PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command()
CVE-2026-34952 9.1 CRITICAL PraisonAI: Missing Authentication in WebSocket Gateway
CVE-2026-34955 8.8 HIGH PraisonAI: Sandbox Escape via shell=True and Bypassable Blocklist in SubprocessSandbox
CVE-2026-34954 8.6 HIGH PraisonAI: SSRF in FileTools.download_file() via Unvalidated URL
CVE-2026-34937 7.8 HIGH PraisonAI: Shell Injection in run_python() via Unescaped $() Substitution
CVE-2026-34936 7.7 HIGH PraisonAI: SSRF via Unvalidated api_base in passthrough() Fallback
CVE-2026-34939 6.5 MEDIUM PraisonAI: 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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