CVE-2026-27655 Stored XSS Vulnerability

High 7.3 Published 3 Apr 2026 Updated 4 Apr 2026

Attackers can inject malicious scripts into the mailbox permissions report, potentially stealing user sessions or executing code in victim browsers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-27655?

CVE-2026-27655 is a high-severity cross-site scripting vulnerability in Zohocorp ManageEngine Exchange Reporter Plus, published on 3 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Zohocorp ManageEngine Exchange Reporter Plus versions before 5802 are vulnerable to Stored XSS in Permissions Based on Mailboxes report.

Weakness: CWE-79

Which versions are affected by CVE-2026-27655?

It affects 1 product.

Products include Zohocorp Manageengine Exchange Reporter Plus.

How do I fix CVE-2026-27655?

No fix has been published for CVE-2026-27655 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-27655 being exploited?

There is no known exploitation of CVE-2026-27655 in the wild and no public exploit code.

Sources

Also known as GHSA-w39g-2rjc-rg77.