EUVD-2026-78424
GHSA-vmf9-xx9w-86wx
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK
1 technique across 1 tactic: Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Sep 15, 2026
Unauthenticated MCP tool invocation in PraisonAI (praisonaiagents 0.6.0–1.6.58 and praisonai 3.10.0–4.6.58) lets a malicious website use DNS rebinding to reach a local or internal ToolsMCPServer SSE endpoint on /sse and /messages/, enumerate registered tools, and invoke them with the server user's privileges. The legacy SSE wrapper performs no Host, Origin, or authentication enforcement, while the newer Streamable HTTP transport rejects the same hostile Origin with HTTP 403, isolating the flaw to the legacy SSE path. An initial remediation ships in praisonaiagents
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 2 packages in pypi
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Primary rating from Vendor (GitHub_M) · only source for this CVE.
CVSS VectorVendor: GitHub_M
DescriptionCVE.org
PraisonAI is a multi-agent teams system. From praisonaiagents 0.6.0 until 1.6.59 and PraisonAI 3.10.0 until 4.6.59, ToolsMCPServer.run_sse() in src/praisonai-agents/praisonaiagents/mcp/mcp_server.py mounts SseServerTransport on the legacy /sse and /messages/ endpoints without default Host, Origin, or authentication enforcement. A malicious website can use DNS rebinding against a reachable local or internal SSE server, supply attacker-controlled Host and Origin headers, enumerate registered tools, and invoke them with the server user's privileges. The Streamable HTTP transport rejects the same hostile Origin, which isolates the flaw to the legacy SSE wrapper. An initial remediation was released in praisonaiagents 1.6.59 and PraisonAI 4.6.59.
Technical POC Analysis
Advisory: GHSA-vmf9-xx9w-86wx (MervinPraison/PraisonAI).
Full technical POC analysis - root cause, step-by-step exploitation and patch breakdown - is part of the Pro and Business plans.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Remote code execution in PraisonAI before 1.6.78 allows attackers to run arbitrary Python on the host by manipulating th
PraisonAI's TypeScript MCP server (npm package `praisonai`, versions 1.5.0 through 1.7.1) exposes an HTTP JSON-RPC trans
WebSocket origin-validation bypass in PraisonAI's Browser Server (praisonai/browser/server.py) before 4.6.58 lets an att
PraisonAI's `praisonai serve` subsystem (agents and unified modes) accepts an `--api-key` CLI flag that is parsed but ne
System prompt extraction and unauthorized tool invocation in PraisonAI before 4.6.78 arise because the prompt-injection
Unauthenticated remote agent invocation in PraisonAI versions 4.6.34 through 4.6.57 allows any network-reachable caller
SSRF protection bypass in PraisonAI's praisonaiagents library (all versions before 1.6.58) lets low-privileged users rou
Server-side request forgery in PraisonAI's Crawl4AI/Chromium crawling backend (all versions before 1.6.78) lets low-priv
Authentication fail-open in PraisonAI's Recipe HTTP server allows unauthenticated remote attackers to invoke recipe exec
Authentication bypass in PraisonAI's AgentServer component exposes all routes - /publish, /events, /info, /health - to u
Arbitrary Python code execution in PraisonAI's workflow include feature allows an attacker who controls a local recipe d
Server-side request forgery in PraisonAI's web_crawl() function (versions 1.5.128-1.6.57) allows an attacker who can inf
Exploit-DB