CVE-2026-39890

CRITICAL

9.8

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.115, the AgentService.loadAgentFromFile method uses the js-yaml library to parse YAML files without disabling dangerous tags (such as !!js/function and !!js/undefined). This allows an attacker to craft a malicious YAML file that, when parsed, executes arbitrary JavaScript code. An attacker can exploit this vulnerability by uploading a malicious agent definition file via the API endpoint, leading to remote code execution (RCE) on the server. This vulnerability is fixed in 4.5.115.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/8/2026

Derniere modification4/15/2026

Sourcenvd

Observations honeypot0

Produits affectes

praison:praisonai

Faiblesses (CWE)

CWE-502

References

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-32vr-5gcf-3pw2(security-advisories@github.com)

https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-32vr-5gcf-3pw2(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

Aucune correlation enregistree

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