What’s Vulnerable › Vulnerabilities

CVE-2025-6623: Stored Cross-Site Scripting via XML Input in Multiple WSO2 Products Allows UI Manipulation and Redirection

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-20
• Weakness: CWE-79

Description

The carbon console accepts user-supplied XML input without sufficiently encoding potentially executable content, allowing for the injection of malicious scripts. Successful exploitation allows a remote attacker to execute arbitrary JavaScript in the context of a victim's browser, leading to actions such as redirecting the user to a malicious website or modifying the web page's user interface. Session hijacking is not possible as sensitive session cookies are protected by the httpOnly flag.

Affected products

• WSO2 API Manager: from 3.2.0 before 3.2.0.433; from 3.2.1 before 3.2.1.53; from 4.1.0 before 4.1.0.215; from 4.2.0 before 4.2.0.153; from 4.3.0 before 4.3.0.66; from 4.4.0 before 4.4.0.29 — fixed in 3.2.0.433, 3.2.1.53, 4.1.0.215, 4.2.0.153, 4.3.0.66, 4.4.0.29
• WSO2 API Control Plane: from 4.5.0 before 4.5.0.12 — fixed in 4.5.0.12
• WSO2 Carbon Event Publisher UI: from 5.2.26 before 5.2.26.19; from 5.2.41 before 5.2.41.6; from 5.2.57 before 5.2.57.7; from 5.3.5 before 5.3.5.4; from 5.3.11 before 5.3.11.4; from 5.3.15 before 5.3.15.3 — fixed in 5.2.26.19, 5.2.41.6, 5.2.57.7, 5.3.11.4, 5.3.15.3, 5.3.20.1
• WSO2 Carbon Event Receiver UI: from 5.2.26 before 5.2.26.19; from 5.2.41 before 5.2.41.6; from 5.2.57 before 5.2.57.7; from 5.3.5 before 5.3.5.4; from 5.3.11 before 5.3.11.4; from 5.3.15 before 5.3.15.3 — fixed in 5.2.26.19, 5.2.41.6, 5.2.57.7, 5.3.11.4, 5.3.15.3, 5.3.20.1
• WSO2 Traffic Manager: from 4.5.0 before 4.5.0.11 — fixed in 4.5.0.11
• WSO2 Universal Gateway: from 4.5.0 before 4.5.0.11 — fixed in 4.5.0.11

How to fix

Upgrade to a fixed version: WSO2 API Manager 3.2.0.433, 3.2.1.53, 4.1.0.215, 4.2.0.153; WSO2 API Control Plane 4.5.0.12; WSO2 Carbon Event Publisher UI 5.2.26.19, 5.2.41.6, 5.2.57.7, 5.3.11.4; WSO2 Carbon Event Receiver UI 5.2.26.19, 5.2.41.6, 5.2.57.7, 5.3.11.4; WSO2 Traffic Manager 4.5.0.11; WSO2 Universal Gateway 4.5.0.11. Check the vendor advisory for mitigations.

References

• https://github.com/wso2/carbon-analytics-common/pull/870
• https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4316/

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