Vulnerability · Published Nov 2, 2026 · Assigned by WSO2
CVE-2024-12139Content Spoofing via Error Handling in Multiple WSO2 Products Enables Social Engineering Attacks
Medium 4.3
In plain English
A medium-severity security flaw in WSO2 API Manager from WSO2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Official description
The error handling implementation fails to properly sanitize or validate user-supplied input within URL parameters under specific conditions. This allows end-users to manipulate the error messages that are displayed by the application. By exploiting this vulnerability, malicious actors can inject arbitrary content into error messages. This enables them to perform social engineering attacks, such as phishing or credential theft, by replacing legitimate error messages with malicious content, misleading users into compromising sensitive information or taking harmful actions.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WSO2 | WSO2 API Manager | 3.2.1 – before 3.2.1.494.1.0 – before 4.1.0.2104.2.0 – before 4.2.0.148 |
| WSO2 | WSO2 Identity Server | 5.10.0 – before 5.10.0.3465.11.0 – before 5.11.0.3856.0.0 – before 6.0.0.229 |
| WSO2 | WSO2 Identity Server as Key Manager | 5.10.0 – before 5.10.0.339 |
Weakness: CWE-116 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N