CVE-2025-11437 JhumanJ OpnForm Form Editor forms cross site scripting

Medium 4.8 Published 8 Oct 2025 Updated 8 Oct 2025

Remote attackers can execute cross-site scripting in OpnForm's Form Editor, mitigated by configuring a custom domain.

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

What is CVE-2025-11437?

CVE-2025-11437 is a medium-severity cross-site scripting vulnerability in JhumanJ OpnForm, published on 8 Oct 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

A flaw has been found in JhumanJ OpnForm up to 1.9.3. This affects an unknown part of the file /api/open/forms/ of the component Form Editor. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been published and may be used. This issue is currently under review for additional handling. As of right now the vendor has stated that the feature is disabled until the user has configured their own domain which will mitigate this attack vector.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2025-11437?

It affects 1 product.

Products include Jhumanj Opnform.

How do I fix CVE-2025-11437?

No fix has been published for CVE-2025-11437 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-2025-11437 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11437 exists.

Sources

Also known as GHSA-4ffm-x9r6-99hr.