CVE-2025-8591: WSO2 API Control Plane

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

The software accepts user-supplied input via a URL parameter without adequate output encoding before reflecting it back to the user's browser. This condition allows an attacker to inject malicious script content into pages served by the application. By leveraging this weakness, an attacker can cause the user's browser to redirect to a malicious website, modify the UI of the webpage, or retrieve information from the browser. However, the impact is mitigated by the use of httpOnly flags on session-related cookies, preventing session hijacking.

Affected products

• WSO2 API Control Plane: from 4.5.0, before 4.5.0.44 (fixed in 4.5.0.44); from 4.6.0, before 4.6.0.8 (fixed in 4.6.0.8)
• WSO2 API Manager: from 3.1.0, before 3.1.0.355 (fixed in 3.1.0.355); from 3.2.0, before 3.2.0.459 (fixed in 3.2.0.459); from 3.2.1, before 3.2.1.78 (fixed in 3.2.1.78); from 4.0.0, before 4.0.0.380 (fixed in 4.0.0.380); from 4.1.0, before 4.1.0.243 (fixed in 4.1.0.243); from 4.2.0, before 4.2.0.183 (fixed in 4.2.0.183); …
• WSO2 Identity Server: from 5.10.0, before 5.10.0.384 (fixed in 5.10.0.384); from 6.0.0, before 6.0.0.255 (fixed in 6.0.0.255); from 7.0.0, before 7.0.0.131 (fixed in 7.0.0.131); from 7.1.0, before 7.1.0.51 (fixed in 7.1.0.51)
• WSO2 Identity Server As Key Manager: from 5.10.0, before 5.10.0.375 (fixed in 5.10.0.375)
• WSO2 Open Banking AM: from 2.0.0, before 2.0.0.404 (fixed in 2.0.0.404)
• WSO2 Open Banking Iam: from 2.0.0, before 2.0.0.424 (fixed in 2.0.0.424)
• WSO2 Traffic Manager: from 4.5.0, before 4.5.0.42 (fixed in 4.5.0.42); from 4.6.0, before 4.6.0.7 (fixed in 4.6.0.7)
• WSO2 Universal Gateway: from 4.5.0, before 4.5.0.42 (fixed in 4.5.0.42); from 4.6.0, before 4.6.0.7 (fixed in 4.6.0.7)

Published 2026-07-06. Last modified 2026-10-06.