CVE-2025-36397 Security vulnerabilities have been found in IBM Application Gateway
Remote attackers can inject malicious HTML into IBM Application Gateway, leading to script execution in victims' browsers within the site's security context.
- 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-2025-36397?
CVE-2025-36397 is a medium-severity cross-site scripting vulnerability in IBM Application Gateway, published on 20 Jan 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
IBM Application Gateway 23.10 through 25.09 is vulnerable to HTML injection. A remote 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-2025-36397?
It affects 1 product.
Products include Ibm Application Gateway.
How do I fix CVE-2025-36397?
No fix has been published for CVE-2025-36397 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-2025-36397 being exploited?
There is no known exploitation of CVE-2025-36397 in the wild and no public exploit code.
Other vulnerabilities in IBM Application Gateway
- CVE-2024-28787 IBM Security Verify Access information disclosure
- CVE-2021-20576 Denial of service in Security Verify Access
- CVE-2024-45655 IBM Application Gateway incorrect permission assignment
- CVE-2025-36396 Security vulnerabilities have been found in IBM Application Gateway
- CVE-2022-22387 Cross-site scripting in Application Gateway
Sources
Also known as GHSA-w8f7-v445-8x5q.