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

CVSS 9.8 · Critical EPSS 0.35% · P27

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
MervinPraisonPraisonAI< 4.6.40affected
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I. Basic Information for CVE-2026-47396

Vulnerability Information
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Vulnerability Title
PraisonAI call server exposes unauthenticated agent listing, invocation, and deletion when CALL_SERVER_TOKEN is unset
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
MervinPraison PraisonAI 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MervinPraison PraisonAI是MervinPraison个人开发者的 MervinPraison PraisonAI 4.6.40之前版本存在安全漏洞，该漏洞源于call server的agent控制API在未配置CALL_SERVER_TOKEN时缺乏身份验证，可能导致任意客户端列出agent、检查agent元数据和指令、调用agent以及取消注册agent。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
MervinPraisonPraisonAI < 4.6.40 -

II. Public POCs for CVE-2026-47396

#POC DescriptionSource LinkShenlong Link
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Qwen3.6-35B-A3B · 10050 chars
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III. Intelligence Information for CVE-2026-47396

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Patches & Fixes for CVE-2026-47396 (1)

Vendor Advisories for CVE-2026-47396 (1)

Same Patch Batch · MervinPraison · 2026-07-21 · 25 CVEs total

CVE-2026-473929.9 CRITICALPraisonAI vulnerable to sandbox escape via `print.__self__` builtins module leak in `execu
CVE-2026-473939.8 CRITICALPraisonAI `deploy --type api` emits a Flask server with authentication disabled by default
CVE-2026-473919.8 CRITICALPraisonAI's unauthenticated A2A official example can reach real LLM-driven `eval()` tool e
CVE-2026-474109.8 CRITICALpraisonai-platform: JWT signing key defaults to hardcoded "dev-secret-change-me", allowing
CVE-2026-474139.6 CRITICALpraisonai-platform: Any workspace member can add arbitrary user as owner via POST /workspa
CVE-2026-474169.6 CRITICALpraisonai-platform: Any workspace member can promote themselves (or any other member) to o
CVE-2026-474058.8 HIGHPraisonAI Platform missing role checks let any workspace member become owner and take over
CVE-2026-473998.8 HIGHPraisonAI Platform workspace-scoped routes allow cross-workspace object access by global o
CVE-2026-474158.3 HIGHpraisonai-platform: Issue endpoints accept any issue_id without workspace ownership check,
CVE-2026-474198.3 HIGHpraisonai-platform: Agent endpoints accept any agent_id without workspace ownership check,
CVE-2026-474098.1 HIGHpraisonai-platform: Any workspace member can remove any other member (including the owner)
CVE-2026-474178.1 HIGHpraisonai-platform: Comment endpoints accept any issue_id without workspace ownership chec
CVE-2026-474128.1 HIGHpraisonai-platform: Any workspace member can delete the entire workspace via DELETE /works
CVE-2026-474188.1 HIGHpraisonai-platform: Project endpoints accept any project_id without workspace ownership ch
CVE-2026-474068.1 HIGHpraisonai-platform: Dependency endpoints accept any issue_id and dep_id without workspace
CVE-2026-473988.1 HIGHPraisonAI: Arbitrary code execution via unguarded `spec.loader.exec_module` in `agents_gen
CVE-2026-474147.6 HIGHpraisonai-platform: Label endpoints accept any label_id and any issue_id without workspace
CVE-2026-473977.1 HIGHPraisonAI has an Arbitrary File Write in Python API
CVE-2026-474086.5 MEDIUMpraisonai-platform: list_issue_activity returns activity log for any issue regardless of w
CVE-2026-474116.5 MEDIUMpraisonai-platform: Any workspace member can rewrite workspace name, description, and sett

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-284

V. Comments for CVE-2026-47396

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