CVE-2026-55532
High · 7.6CVSS
7.6
EPSS
0.2%
Published
Aug 25, 2026
CISA due date
—
The record
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, MCP HTTP Stream _validate_origin uses request_origin.startswith(allowed), allowing the attacker-controlled localhost.attacker.com HTTP origin to satisfy the localhost allowlist. A webpage can send Content-Type: text/plain requests without preflight and invoke tools/call without an API key, including file writes that persist agent instructions. This issue is fixed in version 4.6.58.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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