CVE-2026-47398Public exploitNetwork attack vector

Unauthenticated code execution via ungated YAML module import

Published Jul 21, 2026 · Updated Jul 21, 2026

Code injection in Mervin Praison PraisonAI before 4.6.40 allows remote attackers to execute arbitrary Python code through a crafted recipe. Two AgentsGenerator tool-loading functions take module_path values from YAML and pass the referenced files to spec.loader.exec_module without validation or the local-tools gate. The network path requires a reachable legacy recipe server using its default unauthenticated, unrestricted GitHub-recipe settings; local configuration writers can trigger the same execution as the service account.

CVSS severity8.1
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Mervin Praison PraisonAI before 4.6.40 allows remote attackers to execute arbitrary Python code through a crafted recipe. Two AgentsGenerator tool-loading functions take module_path values from YAML and pass the referenced files to spec.loader.exec_module without validation or the local-tools gate. The network path requires a reachable legacy recipe server using its default unauthenticated, unrestricted GitHub-recipe settings; local configuration writers can trigger the same execution as the service account.

The record

CVE
CVE-2026-47398
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
PraisonAI
Product
PraisonAI
Classifications
CWE-829, CWE-94, T1190, T1059.006
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 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=< 4.6.40

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PraisonAI · PraisonAIversion=< 4.6.40

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere
CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application
T1059.006Python

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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