---
title: "CVE-2026-47396: PraisonAI call server exposes unauthenticated agent listing, invocation, and deletion when CALL_SERVER_TOKEN is unset"
url: https://erroneo.us/security/cve/CVE-2026-47396/
description: "CVE-2026-47396 (PraisonAI (PyPI)): PraisonAI is a multi-agent teams system. Prior to version 4.6.40, PraisonAI's call server exposes a network-facing agent…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-07-21
date_modified: 2026-07-22
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-47396"
kev: false
cvss: 9.8
epss: 0.00642
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-47396: PraisonAI call server exposes unauthenticated agent listing, invocation, and deletion when CALL_SERVER_TOKEN is unset

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.6% , percentile 50: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 50% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes PraisonAI (PyPI) <= 4.6.39, fixed in 4.6.40 . Check your lockfile, including transitive dependencies.

## What it is

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 CALLSERVERTOKEN is not configured. The affected component is the praisonai.api.agentinvoke router as mounted by praisonai.api.call. The authentication helper verifytoken() fails open when CALLSERVERTOKEN 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 CALLSERVERTOKEN may unintentionally expose an unauthenticated remote agent control plane. Version 4.6.40 fixes the issue.

## Affected packages

- PyPI `PraisonAI` <= 4.6.39 → fixed: 4.6.40

## Affected products (CVE record)

- MervinPraison PraisonAI: < 4.6.40

## Severity

- GitHub_M CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.64% probability of exploitation activity in the next 30 days; percentile 50.

## Sources

- [GitHub Advisory GHSA-86qc-r5v2-v6x6](https://github.com/advisories/GHSA-86qc-r5v2-v6x6)
- [CVE.org record CVE-2026-47396](https://www.cve.org/CVERecord?id=CVE-2026-47396)
- [NVD entry CVE-2026-47396](https://nvd.nist.gov/vuln/detail/CVE-2026-47396)
- [github.com](https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-86qc-r5v2-v6x6)
- [github.com](https://github.com/MervinPraison/PraisonAI/commit/ef79b7a0561796ad9807f0f09538c25cc78d3619)

---
Source page: https://erroneo.us/security/cve/CVE-2026-47396/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt