CVE-2023-48432 Cross-site scripting in n/a

Medium 6.1 Published 13 Feb 2024 Updated 25 Mar 2025

Attackers can steal user sessions via XSS in Zimbra webmail by tricking victims into clicking malicious links in emails.

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

What is CVE-2023-48432?

CVE-2023-48432 is a medium-severity cross-site scripting vulnerability in n/a, published on 13 Feb 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15, 9.0, and 10.0. XSS, with resultant session stealing, can occur via JavaScript code in a link (for a webmail redirection endpoint) within en email message, e.g., if a victim clicks on that link within Zimbra webmail.

Weakness: CWE-79

Which versions are affected by CVE-2023-48432?

It affects 1 product.

Products include Zimbra Collaboration.

How do I fix CVE-2023-48432?

No fix has been published for CVE-2023-48432 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-2023-48432 being exploited?

There is no known exploitation of CVE-2023-48432 in the wild and no public exploit code.

Sources

Also known as GHSA-xvvw-m6mf-m9hw.