CVE-2026-57139CWE-1188CWE-306CWE-862broken-access-control

CVE-2026-57139

Critical · published September 15, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
54.6
In the wild
Unconfirmed
What it is

PraisonAI is a multi-agent teams system. From 1.5.0 until 1.7.2, MCPServer.startHttp() in src/praisonai-ts/src/mcp/server.ts binds without a host restriction and forwards every HTTP POST request to handleRequest() without authentication or authorization. Any network client that can reach the port can call tools/list, tools/call, resources/read, or prompts/get, causing registered handlers to run with server-side credentials and process privileges or disclose registered data. An initial remediation was released in version 1.7.2.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00754 · 54.6th percentile
Weaknesses
CWE-1188 · Initialization of a Resource with an Insecure Default; CWE-306 · Missing Authentication for Critical Function; CWE-862 · Missing Authorization
Published
2026-09-15T15:17Z
References (4)
https://github.com/MervinPraison/PraisonAI/commit/709a0387853709a5e2f2c34680fa64cada252c27 · [email protected]https://github.com/MervinPraison/PraisonAI/releases/tag/v4.6.60 · [email protected]https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-j4f3-55x4-r6q2 · [email protected]https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-j4f3-55x4-r6q2 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 SEP 03:31Z
    EPSS moved — → 0%
    epss
  • 15 SEP 10:25Z
    PraisonAI MCPServer exposes unauthenticated HTTP tools/call
    cvelistv5