CVE-2026-47396 Details
Description
PraisonAI is a multi-agent teams system. Prior to version 4.6.40, PraisonAI's call server exposes a network-facing agent control API without authentication when `CALL_SERVER_TOKEN` is not configured. The affected component is the `praisonai.api.agent_invoke` router as mounted by `praisonai.api.call`. The authentication helper `verify_token()` fails open when `CALL_SERVER_TOKEN` is unset. Since every sensitive agent-control endpoint depends on this helper, starting the call server without a token allows any reachable client to list agents, inspect agent metadata and instructions, invoke agents, and unregister agents. This is security-relevant because the bundled call server includes the vulnerable router and binds to `0.0.0.0`. As a result, operators who launch the call server without explicitly setting `CALL_SERVER_TOKEN` may unintentionally expose an unauthenticated remote agent control plane. Version 4.6.40 fixes the issue.
A vulnerability in PraisonAI's call server prior to version 4.6.40 allows unauthenticated access to the agent control API. This issue arises when the 'CALL_SERVER_TOKEN' environment variable is not set, leading to a fail-open authentication default. The vulnerability is present in the 'praisonai.api.agent_invoke' router, which is mounted by 'praisonai.api.call'. When the call server is started without a token, any reachable client can list agents, inspect agent metadata and instructions, invoke agents, and unregister agents. The call server binds to '0.0.0.0', exposing these endpoints to the network.
Users should update to PraisonAI version 4.6.40 or later, and ensure that the 'CALL_SERVER_TOKEN' environment variable is set before starting the call server. For those using an earlier version, the call server should be bound to '127.0.0.1' to prevent external access.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 21, 2026CISA-ADP
Assessed Jul 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-86qc-r5v2-v6x6 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/MervinPraison/PraisonAI/commit/ef79b7a0561796ad9807f0f09538c25cc78d3619 | [email protected] | Source CodeVendor |
| https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-86qc-r5v2-v6x6 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| PraisonAI | <= 4.6.39 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Modified | CISA-ADP |
| Jul 21, 2026 | New CVE Received | [email protected] |