# CVE-2026-4108: Zohocorp ManageEngine Exchange Reporter Plus Stored XSS in Reports

Source: https://junglewise.ai/threats/cve-2026-4108-zohocorp-manageengine-exchange-reporter-plus-stored-xss-in-reports  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-03. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-4108 · Severity: high · CVSS 7.3 · Published 2026-04-03

ManageEngine Exchange Reporter Plus is a reporting and auditing tool for Microsoft Exchange environments. A security vulnerability in the 'Non-Owner Mailbox Permission' report allows an attacker to inject malicious scripts into the system. If an administrator views the affected report, the attacker could potentially take over their session, leading to unauthorized access to sensitive email reporting data or configuration changes.

Technologies: [Zoho Corporation Exchange Reporter Plus](https://junglewise.ai/threats/technologies/exchange-reporter-plus). Vendors: [Zoho Corporation](https://junglewise.ai/threats/vendors/zoho-corporation).

## Quick answers

**Is CVE-2026-4108 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-4108 being exploited in the wild.

**How severe is CVE-2026-4108?** High severity, with a CVSS score of 7.3, published 3 April 2026.

**Which products and versions are affected?** Zoho Corporation Exchange Reporter Plus Builds 5801 and below.

**Is there a fix for CVE-2026-4108?** A patch was published on 2026-03-19: Fixed in version 5802 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-4108 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-4108?** Check whether you run Zoho Corporation Exchange Reporter Plus at an affected version. 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 stored cross-site scripting (XSS) vulnerability exists in ManageEngine Exchange Reporter Plus builds 5801 and below within the 'Non-Owner Mailbox Permission' report module. The root cause is improper neutralization of input during web page generation (CWE-79). An authenticated attacker with low-level privileges can inject malicious scripts that are stored on the server. When a victim (typically an administrator) views the compromised report, the script executes in their browser context. This can lead to session hijacking or unauthorized actions performed on behalf of the victim. The issue is resolved in build 5802 through improved input validation.

## Affected products

- Zohocorp ManageEngine Exchange Reporter Plus Builds 5801 and below

## Timeline

- 2026-03-19: patched: Fixed in version 5802
- 2026-04-03: advisory: Initial advisory published by vendor and NVD

## References

- [https://www.manageengine.com/products/exchange-reports/advisory/CVE-2026-4108.html](https://www.manageengine.com/products/exchange-reports/advisory/CVE-2026-4108.html)

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