# CVE-2024-4989: WSO2 API Manager callback URL validation bypass

Source: https://junglewise.ai/threats/cve-2024-4989-the-callback-url-parameter-in-wso2-api-manager-fails-to-validate  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2024-4989 · Severity: medium · CVSS 5.4 · Published 2026-10-21

WSO2 API Manager is a platform for managing APIs used by organizations. The product fails to properly validate callback URL parameters, allowing attackers to redirect users to malicious websites. Combined with social engineering, this could enable phishing attacks to steal sensitive information or compromise user accounts.

Technologies: [Wso2 API Manager](https://junglewise.ai/threats/technologies/api-manager). Vendors: [Wso2](https://junglewise.ai/threats/vendors/wso2).

## Quick answers

**Is CVE-2024-4989 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-4989 being exploited in the wild.

**How severe is CVE-2024-4989?** Medium severity, with a CVSS score of 5.4, published 21 October 2026.

**Which products and versions are affected?** WSO2 API Manager.

**Is there a fix for CVE-2024-4989?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2024-4989 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2024-4989?** Check whether you run Wso2 API Manager. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an input validation failure in the callback URL parameter of WSO2 API Manager. An attacker can supply a malicious URL that the application does not properly validate, allowing user redirection to attacker-controlled sites. This is an open redirect vulnerability that can be weaponized for phishing attacks without requiring authentication or special privileges.

## Affected products

- WSO2 API Manager

## Timeline

- 2026-10-21: disclosed

## References

- [https://github.com/wso2/product-apim/pull/13502](https://github.com/wso2/product-apim/pull/13502)
- [https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3403/](https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3403/)

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