CVE-2026-11854 Cross-Site Scripting via Authentication Endpoint Error Message in Multiple WSO2 Products
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-11854?
CVE-2026-11854 is a medium-severity vulnerability in WSO2 API Control Plane, published on 28 Oct 2026.
Official description
The authentication endpoint generates an error message that includes reflected data directly from the request without sufficient sanitization or encoding. This allows an attacker to inject malicious scripts that can be executed in the context of a victim's browser.
Successful exploitation enables an attacker to perform actions within the user's browser, such as redirecting the user to a malicious website, modifying the web page's user interface, or retrieving information. However, due to the httpOnly flag on session-related cookies, session hijacking or similar attacks are not possible.
Weakness: CWE-79
Which versions are affected by CVE-2026-11854?
How do I fix CVE-2026-11854?
No fix has been published for CVE-2026-11854 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-11854 being exploited?
There is no known exploitation of CVE-2026-11854 in the wild and no public exploit code.
Sources
Also known as GHSA-jw6g-mv47-3fhf.