CVE-2026-57124Public exploitNetwork attack vectorHinoki check available

Unauthenticated command execution via MCP process launch

Published Sep 14, 2026 · Updated Sep 14, 2026

OS command injection in PraisonAI 4.6.48 allows remote attackers to execute local processes through the UI MCP connect API. The unauthenticated endpoint passes caller-controlled command and args values to StdioMCPClient, which starts the selected process before its handshake completes. Reachability requires an exposed UI host application; default UI commands bind to all interfaces, and execution inherits the UI service account's access.

CVSS severity9.8
Critical
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

OS command injection in PraisonAI 4.6.48 allows remote attackers to execute local processes through the UI MCP connect API. The unauthenticated endpoint passes caller-controlled command and args values to StdioMCPClient, which starts the selected process before its handshake completes. Reachability requires an exposed UI host application; default UI commands bind to all interfaces, and execution inherits the UI service account's access.

The record

CVE
CVE-2026-57124
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
PraisonAI
Product
PraisonAI
Classifications
CWE-78, CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.6.59

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PraisonAI · PraisonAIversion=< 4.6.59

Published CVSS scores

9.8MervinPraisonCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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