# CVE-2025-6508: WSO2 API Manager Swagger UI URL override in API Publisher

Source: https://junglewise.ai/threats/cve-2025-6508-wso2-api-manager-swagger-ui-url-override-in-api-publisher  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-06. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2025-6508 · Severity: medium · CVSS 4.3 · Published 2026-08-06

WSO2 API Manager's API Publisher portal includes a Swagger UI Try-out console that allows users to test API definitions. A vulnerability allows attackers to load external Swagger API definitions that override the legitimate ones, tricking users into sending requests to attacker-controlled backend services or exposing sensitive information during interaction with the fraudulent definitions.

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

## Quick answers

**Is CVE-2025-6508 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-6508 being exploited in the wild.

**How severe is CVE-2025-6508?** Medium severity, with a CVSS score of 4.3, published 6 August 2026.

**Which products and versions are affected?** Wso2 API Manager 4.1.0, 4.2.0.

**Is there a fix for CVE-2025-6508?** 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-2025-6508 attacked?** It is attacked over the network.

**Am I affected by CVE-2025-6508?** Check whether you run 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 UI misrepresentation flaw in the Swagger UI Try-out console integrated within the API Publisher documentation module. The root cause is insecure handling of external Swagger API definition URLs, which allows an attacker to supply a malicious URL that overrides the legitimate API definitions stored in the Publisher portal. The attack requires user interaction (UI:R) and network reachability with no prior authentication needed (PR:N). An attacker can craft a phishing link or social engineering attack that directs a user to access the API Publisher with a specially crafted parameter pointing to a malicious Swagger definition URL, causing the console to load attacker-controlled API specifications. This could lead to unintended API requests sent to attacker infrastructure or disclosure of sensitive data. WSO2 provides fixes via update levels: API Manager 4.2.0 requires update 183, and 4.1.0 requires update 212.

## Affected products

- WSO2 API Manager 4.1.0, 4.2.0

## Timeline

- 2026-05-03: disclosed
- 2026-08-06: published

## References

- [https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4306/](https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4306/)

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