---
id: CVE-2025-0209
title: >-
  A reflected cross-site scripting (XSS) vulnerability exists in the account
  registration flow of WSO2 Identity Server due to improper output encoding
summary: >-
  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…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: wso2
product: identity_server
affected:
  - identity_server = 7.0.0
published: '2025-09-23'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T20:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-0209'
references:
  - url: >-
      https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3902/
    label: ed10eef1-636d-4fbe-9993-6890dfa878f8
tags:
  - nvd
epss: 0.00233
epssPercentile: 0.1307
ingestedAt: '2026-10-12T14:50:33.981Z'
---

## Overview

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.

## Affected

- `identity_server = 7.0.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.