Reflected XSS in Vtiger CRM 8.4.0 MailManager Module

Publication date: 2026-04-13

Last updated on: 2026-04-14

Assigner: MITRE

Description

Vtiger CRM 8.4.0 contains a reflected cross-site scripting (XSS) vulnerability in the MailManager module. Improper handling of user-controlled input in the _folder parameter allows a specially crafted, double URL-encoded payload to be reflected and executed in the context of an authenticated user s session.

CVSS Scores

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Meta Information

Published

2026-04-13

Last Modified

2026-04-14

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2025-70936

Affected Vendors & Products

Vendor	Product	Version / Range
vtiger	crm	8.4.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a reflected cross-site scripting (XSS) issue found in Vtiger CRM version 8.4.0, specifically in the MailManager module. It occurs because the application improperly handles user-controlled input in the _folder parameter. An attacker can craft a specially designed, double URL-encoded payload that gets reflected and executed within the context of an authenticated user's session.

Impact Analysis

The vulnerability can allow an attacker to execute malicious scripts in the context of an authenticated user's session. This can lead to unauthorized actions such as stealing session cookies, hijacking user accounts, performing actions on behalf of the user, or delivering malicious content, potentially compromising the security and integrity of the affected system.

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