XSS in WSO2 Auth Endpoints via Unencoded Output
CVE-2025-5770 Published on November 5, 2025

Reflected Cross-Site Scripting (XSS) in Authentication Endpoints of Multiple WSO2 Products
A reflected cross-site scripting (XSS) vulnerability exists in the authentication endpoints of multiple WSO2 products due to a lack of output encoding. A malicious actor can inject arbitrary JavaScript payloads into the authentication endpoint, which are reflected back in the response, enabling browser-based attacks. Exploitation may result in redirection to malicious websites, UI manipulation, or unauthorized data access from the victims browser. However, session-related cookies are protected with the httpOnly flag, which mitigates session hijacking via this vector.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2025-5770 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.

Attack Vector:

NETWORK

Attack Complexity:

LOW

Privileges Required:

NONE

User Interaction:

REQUIRED

Scope:

CHANGED

Confidentiality Impact:

LOW

Integrity Impact:

LOW

Availability Impact:

NONE

Weakness Type

What is a XSS Vulnerability?

The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

CVE-2025-5770 has been classified to as a XSS vulnerability or weakness.

Products Associated with CVE-2025-5770

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Wso2 Identity Server

Wso2 Api Manager

Wso2 Api Control Plane

Wso2 Identity Server

Affected Versions

WSO2 Identity Server:

Before 6.0.0 is unknown.
Version 6.0.0 and below 6.0.0.247 is affected.
Version 6.1.0 and below 6.1.0.246 is affected.
Version 7.0.0 and below 7.0.0.122 is affected.
Version 7.1.0 and below 7.1.0.29 is affected.

WSO2 API Manager:

Before 4.2.0 is unknown.
Version 4.2.0 and below 4.2.0.150 is affected.
Version 4.3.0 and below 4.3.0.63 is affected.
Version 4.4.0 and below 4.4.0.26 is affected.
Version 4.5.0 and below 4.5.0.10 is affected.

WSO2 API Control Plane:

Version 4.5.0 and below 4.5.0.11 is affected.

Exploit Probability

EPSS

0.02%

Percentile

6.93%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.