CVE-2025-27914 Cross-site scripting in n/a

Medium 5.4 Published 12 Mar 2025 Updated 12 Mar 2025

Authenticated attackers can inject arbitrary JavaScript via crafted URLs in Zimbra Collaboration, potentially hijacking victim sessions.

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-2025-27914?

CVE-2025-27914 is a medium-severity cross-site scripting vulnerability in n/a, published on 12 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1. A Reflected Cross-Site Scripting (XSS) vulnerability exists in the /h/rest endpoint, allowing authenticated attackers to inject and execute arbitrary JavaScript in a victim's session. Exploitation requires a valid auth token and involves a crafted URL with manipulated query parameters that triggers XSS when accessed by a victim.

Weakness: CWE-79

Which versions are affected by CVE-2025-27914?

It affects 1 product.

Products include Zimbra Collaboration.

How do I fix CVE-2025-27914?

No fix has been published for CVE-2025-27914 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-2025-27914 being exploited?

There is no known exploitation of CVE-2025-27914 in the wild and no public exploit code.

Sources

Also known as GHSA-xr5m-494h-32gf.