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CVE-2026-39890 - Vulnerability Analysis

CriticalCVSS: 9.8

Last Updated: April 8, 2026

PraisonAI - Remote Code Execution

Published: April 8, 2026Updated: April 8, 2026Remote Exploitable

Overview

PraisonAI < 4.5.115 contains a remote code execution caused by unsafe YAML parsing with dangerous tags in AgentService.loadAgentFromFile, letting attackers execute arbitrary JavaScript via malicious YAML upload.

Severity & Score

Severity: Critical

CVSS Score: 9.8

Impact

Attackers can execute arbitrary JavaScript code remotely, leading to full server compromise.

Mitigation

Update to version 4.5.115 or later.

References

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

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-39890
Severity: Critical
CVSS Score: 9.8
Type: insecure_deserialization
Status: unconfirmed

CWE

CWE-502

CVSS Metrics

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