# CVE-2026-3096: WSO2 API Manager reverse tabnabbing in external links

Source: https://junglewise.ai/threats/cve-2026-3096-wso2-api-manager-reverse-tabnabbing-in-external-links  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-10. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-3096 · Severity: medium · CVSS 4.7 · Published 2026-09-10

WSO2 API Manager and API Control Plane web portals allow external links to open in new browser tabs while retaining access from the newly-opened page back to the original window. An attacker can exploit this to redirect users to phishing pages or steal credentials after a user clicks a malicious external link, compromising the security of the trusted application.

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

## Quick answers

**Is CVE-2026-3096 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-3096 being exploited in the wild.

**How severe is CVE-2026-3096?** Medium severity, with a CVSS score of 4.7, published 10 September 2026.

**Which products and versions are affected?** Wso2 API Control Plane 4.5.0, 4.6.0; Wso2 API Manager 3.2.0, 3.2.1, 4.1.0, 4.2.0, 4.3.0, 4.4.0, 4.5.0, 4.6.0.

**Is there a fix for CVE-2026-3096?** 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-2026-3096 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-3096?** Check whether you run Wso2 API Control Plane or Wso2 API Manager at an affected version. 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 a reverse tabnabbing attack in the product's web portal link-handling functionality. When external links are opened in new tabs, the originating window object remains accessible to the newly-opened page via the window.opener property (or similar mechanisms), allowing the attacker-controlled page to manipulate or redirect the original trusted application window. The attack requires user interaction (clicking a malicious link) and affects the web portal UI layer. Patches are available via GitHub and through WSO2 support subscription updates at specified update levels for affected versions.

## Affected products

- WSO2 API Control Plane 4.5.0, 4.6.0
- WSO2 API Manager 3.2.0, 3.2.1, 4.1.0, 4.2.0, 4.3.0, 4.4.0, 4.5.0, 4.6.0

## Timeline

- 2026-07-04: disclosed
- 2026-09-10: advisory

## References

- [https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5164/](https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5164/)

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- [WSO2 API Manager SVG upload stored XSS in Publisher portal](https://junglewise.ai/threats/cve-2025-12544-the-publisher-portal-fails-to-enforce-proper-validation-on)
- [WSO2 products sensitive information disclosure in Event Publisher logs](https://junglewise.ai/threats/cve-2026-18800-when-an-event-publisher-output-adapter-is-configured-with)
- [WSO2 System REST APIs access control bypass](https://junglewise.ai/threats/cve-2025-11969-the-system-rest-apis-do-not-correctly-enforce-access-control)