JavaScript Injection Vulnerability in PraisonAI by Mervin Praison
CVE-2026-56840

8.8HIGH

Key Information:

Vendor

Mervinpraison

Status
Praisonai
Vendor
CVE Published:
23 October 2026

What is CVE-2026-56840?

PraisonAI, a multi-agent collaboration tool, is prone to a JavaScript injection vulnerability due to improper handling of input in the approval dashboard. Versions from 4.5.2 up to 4.6.58 allow an attacker to render malicious JavaScript by manipulating tool approval arguments. This occurs when the approving user accesses a specially crafted approval URL, leading to the execution of the injected script within the dashboard context. This could enable unauthorized approvals through automated requests. The issue has been resolved in version 4.6.59.

Affected Version(s)

PraisonAI >= 4.5.2, < 4.6.59

References

https://github.com/MervinPraison/PraisonAI/security/advis...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.