CVE-2025-0209 Reflected Cross-Site Scripting (XSS) in WSO2 Identity Server Account Registration Flow
Attackers can inject malicious scripts into the WSO2 Identity Server registration flow to execute JavaScript in victim browsers, potentially stealing data or modifying the UI.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-0209?
CVE-2025-0209 is a medium-severity cross-site scripting vulnerability in Wso2 Identity Server, published on 23 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A reflected cross-site scripting (XSS) vulnerability exists in the account registration flow of WSO2 Identity Server due to improper output encoding. A malicious actor can exploit this vulnerability by injecting a crafted payload that is reflected in the server response, enabling the execution of arbitrary JavaScript in the victim's browser.
This vulnerability could allow attackers to redirect users to malicious websites, modify the user interface, or exfiltrate data from the browser. However, session-related sensitive cookies are protected using the httpOnly flag, which mitigates the risk of session hijacking.
Weakness: CWE-79
Which versions are affected by CVE-2025-0209?
It affects 1 product.
Products include Wso2 Identity Server.
How do I fix CVE-2025-0209?
No fix has been published for CVE-2025-0209 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-2025-0209 being exploited?
There is no known exploitation of CVE-2025-0209 in the wild and no public exploit code.
Other vulnerabilities in Wso2 Identity Server
- CVE-2016-4311 Cross-site request forgery in n/a
- CVE-2025-10470 Denial-of-Service via Magic Link Authentication in WSO2 Identity Server Allows Service Unavailability
- CVE-2025-12107 Server-Side Template Injection via Velocity Template Engine in Multiple WSO2 Products Allows Remote Code Execution
- CVE-2016-4312 XML external entity in n/a
- CVE-2025-10908 Account Lock Bypass via Magic Link or Pass Key Authentication in WSO2 Identity Server Allows Unauthorized Access
Sources
Also known as GHSA-c5h2-h4f7-jccx.