Is CVE-2025-70936 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-70936 being exploited in the wild.

How severe is CVE-2025-70936?

Medium severity, with a CVSS score of 5.4, published 13 April 2026.

Is there a fix for CVE-2025-70936?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2025-70936 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2025-70936?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-70936: Vtiger CRM reflected XSS in MailManager module

CVE-2025-70936 · Severity: medium · CVSS 5.4 · Published 2026-04-13

Vtiger CRM, a popular open-source platform for managing customer relationships and sales pipelines, contains a security flaw in its MailManager module. An attacker could use this vulnerability to execute malicious scripts in the browser of an authenticated user, potentially leading to unauthorized actions or the theft of session information. This could compromise the integrity of customer data and disrupt business operations for organizations using the affected version.

Quick answers

Is CVE-2025-70936 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-70936 being exploited in the wild.
How severe is CVE-2025-70936?: Medium severity, with a CVSS score of 5.4, published 13 April 2026.
Which products and versions are affected?: Vtiger CRM 8.4.0.
Is there a fix for CVE-2025-70936?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-70936 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2025-70936?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected cross-site scripting (XSS) vulnerability exists in Vtiger CRM 8.4.0 within the MailManager module. The root cause is improper neutralization of user-controlled input in the '_folder' parameter. An attacker can bypass security filters by using a specially crafted, double URL-encoded payload. When an authenticated user interacts with a malicious link, the payload is reflected and executed in the context of their session. This allows for the execution of arbitrary JavaScript, which can be used to hijack sessions or perform actions on behalf of the user. The vulnerability requires network access and minimal user interaction (clicking a link) by an authenticated user.

Affected products

Vtiger CRM 8.4.0

Timeline

2026-04-13: advisory: CVE published by MITRE/NVD

References

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