CVE-2025-12635 IBM WebSphere Application Server and WebSphere Application Server Liberty Cross-Site Scripting
Attackers can execute malicious scripts in user browsers via crafted URLs, potentially leading to session hijacking or data theft.
- 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-2025-12635?
CVE-2025-12635 is a medium-severity cross-site scripting vulnerability in Ibm Websphere Application Server, published on 8 Dec 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 WebSphere Application Server 8.5, 9.0 and IBM WebSphere Application Server Liberty 17.0.0.3 through 25.0.0.12 are affected by cross-site scripting due to improper validation of user-supplied input. An attacker could exploit this vulnerability by using a specially crafted URL to redirect the user to a malicious site.
Weakness: CWE-79
Which versions are affected by CVE-2025-12635?
It affects 1 product.
Products include Ibm Websphere Application Server.
How do I fix CVE-2025-12635?
No fix has been published for CVE-2025-12635 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-2025-12635 being exploited?
There is no known exploitation of CVE-2025-12635 in the wild and no public exploit code.
Other vulnerabilities in Ibm Websphere Application Server
Sources
Also known as GHSA-pmc7-2mv9-jmgx.