by Kastro
Paper/Archive/CVE-2026-57139

CVE-2026-57139

MervinPraison PraisonAI — PraisonAI MCPServer exposes unauthenticated HTTP tools/call

EPSS 0.8%public exploitCVSS 9.8
critical.is priorityof 100
50
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 55.1.551 × 2011.0Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
PraisonAI>= 1.5.0, < 1.7.2–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/MervinPraison/PraisonAI/security/advisories/GHSA-j4f3-55x4-r6q2refgithub.com/MervinPraison/PraisonAI/commit/709a0387853709a5e2f2c34680fa64cada252c27refgithub.com/MervinPraison/PraisonAI/releases/tag/v4.6.60