VULNERABILITY INTELLIGENCE
CVE-2026-55529
CVSS score6.9 MEDIUM
EPSS probability0.18%
CISA KEVNot currently listed
Published2026-08-25
Last modified2026-09-09
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
Description
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, the MCP HTTP Stream _validate_origin method accepts request_origin.startswith(allowed), so the attacker-controlled localhost.evil.example HTTP origin matches the localhost allowlist. Without an API key, a malicious webpage can submit tools/call requests to the local MCP server and execute exposed tools. This issue is fixed in version 4.6.58.
Weakness classification
- security-advisories@github.com: CWE-306