CVE-2026-11903 Stored XSS in MOVEit Transfer Ad Hoc module

High 8.0 Published 8 Jul 2026 Updated 9 Jul 2026

Attackers can inject malicious scripts into the Ad Hoc module, potentially leading to session hijacking or code execution in MOVEit Transfer.

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-2026-11903?

CVE-2026-11903 is a high-severity cross-site scripting vulnerability in Progress MOVEit Transfer, published on 8 Jul 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

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Progress MOVEit Transfer (Ad Hoc module).

This issue affects MOVEit Transfer: from 2026.0.0 before 2026.0.1, from 2025.1.0 before 2025.1.4, from 2025.0.0 before 2025.0.8.

Weakness: CWE-79

Which versions are affected by CVE-2026-11903?

It affects 1 product.

Products include Progress Moveit Transfer.

How do I fix CVE-2026-11903?

No fix has been published for CVE-2026-11903 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-2026-11903 being exploited?

There is no known exploitation of CVE-2026-11903 in the wild and no public exploit code.

Sources

Also known as GHSA-j526-4hhw-j4mr.