# CVE-2025-10503

> Vulnerability · severity: **MEDIUM** (CVSS 6.1).

## 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.

## Key facts

- **CVE ID:** CVE-2025-10503
- **Published:** 2026-04-29
- **CVSS severity:** MEDIUM
- **CVSS base score:** 6.1
- **CWE codes:** CWE-79

## Affected products

- `wso2:identity_server`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-10503

## Citation

> AI Analytics. CVE-2025-10503. Retrieved 2026-07-19 from https://api.ai-analytics.org/cve/CVE-2025-10503. Derived from NIST NVD. Licensed CC0.

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