What’s Vulnerable › Vulnerabilities
CVE-2025-10503: Reflected Cross-Site Scripting via Authentication Endpoint in WSO2 Identity Server
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-29 · updated 2026-10-07
- Weakness: CWE-79
Description
The authentication endpoint accepts user-supplied input without enforcing expected validation constraints, leading to a lack of proper output encoding. This allows for the injection of malicious JavaScript payloads, enabling reflected cross-site scripting. An attacker can leverage this vulnerability to redirect the user's browser to a malicious website, modify the user interface of the web page, retrieve information from the browser, or cause other harmful actions. However, due to the protection of session-related cookies with the httpOnly flag, session hijacking is not possible.
Affected products
- WSO2 Identity Server: from 7.1.0 before 7.1.0.28 — fixed in 7.1.0.28
How to fix
Upgrade to a fixed version: WSO2 Identity Server 7.1.0.28. Check the vendor advisory for mitigations.
References
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