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CVE-2026-61439— PraisonAI before 4.6.78 Prompt Injection Defense Bypass

CVSS 7.5 · High EPSS 0.26% · P18

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProductVersion RangeStatus
MervinPraisonPraisonAI< 4.6.78affected
4.6.78unaffected
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I. Basic Information for CVE-2026-61439

Vulnerability Information
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Vulnerability Title
PraisonAI before 4.6.78 Prompt Injection Defense Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
PraisonAI versions before 4.6.78 contain a prompt injection defense misconfiguration where the block threshold defaults to CRITICAL severity, allowing HIGH-level threats to pass through unblocked. Attackers can submit single-vector prompt injection attacks such as instruction overrides or financial manipulation that trigger HIGH severity detection but are logged without blocking, enabling system prompt extraction and unauthorized tool invocations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的默认资源初始化
Source: CVE Program / CVE List V5
Vulnerability Title
Mervin Praison PraisonAI 配置错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mervin Praison PraisonAI是Mervin Praison个人开发者开源的一个低代码多智能体协作框架。 Mervin Praison PraisonAI 4.6.78之前版本存在配置错误漏洞，该漏洞源于提示注入防御配置错误，阻塞阈值默认为CRITICAL严重级别，允许HIGH级别威胁通过未阻塞，攻击者可提交单向量提示注入攻击从而触发HIGH严重级别检测，但仅被记录而未被阻塞，导致系统提示提取和未授权的工具调用。
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)

Affected Products

VendorProductAffected VersionsCPESubscribe
MervinPraisonPraisonAI 0 ~ 4.6.78 -

II. Public POCs for CVE-2026-61439

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 5839 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-61439

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Vendor Advisories for CVE-2026-61439 (2)

Same Patch Batch · MervinPraison · 2026-07-11 · 9 CVEs total

CVE-2026-6144710.0 CRITICALPraisonAI before 1.6.78 Remote Code Execution via CodeAgent
CVE-2026-614459.9 CRITICALPraisonAI before 4.6.78 Arbitrary File Write and Command Execution
CVE-2026-600909.8 CRITICALPraisonAI before 4.6.78 SQL/CQL Injection via vector dimension
CVE-2026-614268.6 HIGHPraisonAI before 1.7.3 Unauthenticated Agent Access via Insecure Defaults
CVE-2026-614298.5 HIGHPraisonAI before 1.6.78 SSRF via Crawl4AI Chromium backend
CVE-2026-614287.3 HIGHPraisonAI AgentMail before 4.6.78 Message Injection via Webhook
CVE-2026-614427.1 HIGHPraisonAI Platform before 0.1.9 Authorization Bypass via PATCH
CVE-2026-600885.5 MEDIUMPraisonAI before 4.6.78 Path Traversal via Custom Commands

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-1188

V. Comments for CVE-2026-61439

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