CVE-2025-36121 HTML Injection Vulnerability in a Specific URL Endpoint of the IBM OpenPages Application

Medium 5.4 Published 27 Oct 2025 Updated 27 Oct 2025

An authenticated attacker can inject malicious HTML into IBM OpenPages, leading to script execution in victims' 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-2025-36121?

CVE-2025-36121 is a medium-severity cross-site scripting vulnerability in IBM OpenPages, published on 27 Oct 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

IBM OpenPages 9.1 and 9.0 is vulnerable to HTML injection. A remotely authenticated attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.

Weakness: CWE-80

Which versions are affected by CVE-2025-36121?

It affects 1 product.

Products include Ibm Openpages.

How do I fix CVE-2025-36121?

No fix has been published for CVE-2025-36121 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-2025-36121 being exploited?

There is no known exploitation of CVE-2025-36121 in the wild and no public exploit code.

Sources

Also known as GHSA-hg9g-9mr2-cpv6.