PT-2026-60135 · Mervinpraison · Praisonai

Dinhvaren · Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-61427

NVD

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

PraisonAI before 4.6.78 exposes the MCP HTTP-stream transport without authentication by default: the CLI --api-key option defaults to None, and the server only enforces Authorization/Bearer checks when an API key is configured. When an operator runs 'praisonai mcp serve --transport http-stream' without an API key, an unauthenticated client (no Authorization header, and no Origin header, which is also permitted) can initialize a session, enumerate the available tools (tools/list), and invoke tools (tools/call). Additionally, the dispatcher forwards tool-call arguments to handlers without validating them against the advertised inputSchema. The server binds to 127.0.0.1 by default, so remote exploitation requires the operator to bind to a network-accessible address (e.g., --host 0.0.0.0).

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2026-61427

Affected Products

Praisonai

References · 3

• https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-hc5v-gxvj-58wh · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-61427 · Security Note
• https://vulncheck.com/advisories/praisonai-before-authentication-bypass-via-http-stream · Note