# CVE-2026-116280: Kameleo server-side request forgery in proxy validation

Source: https://junglewise.ai/threats/cve-2026-116280-a-vulnerability-was-determined-in-kameleo-up-to-5-0-1-26  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-26. Updated: 2026-10-26  
License: CC BY 4.0 with a link back

CVE-2026-116280 · Severity: medium · CVSS 5.5 · Published 2026-10-26

Kameleo is a browser automation and privacy tool that includes proxy testing functionality. A flaw in the proxy validator allows attackers to manipulate host and port parameters to perform server-side request forgery (SSRF), potentially accessing internal services or systems. An attacker can trigger this remotely without authentication.

Technologies: [Kameleo](https://junglewise.ai/threats/technologies/kameleo). Vendors: [Kameleo](https://junglewise.ai/threats/vendors/kameleo).

## Quick answers

**Is CVE-2026-116280 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-116280 being exploited in the wild.

**How severe is CVE-2026-116280?** Medium severity, with a CVSS score of 5.5, published 26 October 2026.

**Which products and versions are affected?** Kameleo up to 5.0.1.26.

**Is there a fix for CVE-2026-116280?** Yes: fixed in 5.2.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-116280 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-116280?** Check whether you run Kameleo 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.

## How to fix

- Fixed in 5.2.0

## Technical details

The InternalController.TestProxy function in client-engine-application/f.cs does not properly validate user-supplied host and port arguments, allowing attackers to craft requests to arbitrary internal or external targets. The vulnerability is triggered via HTTP request manipulation and results in the application making unintended network connections on behalf of the server. The vulnerable route was removed and replaced with /general/test-proxy in version 5.2.0.

## Affected products

- Kameleo Kameleo up to 5.0.1.26

## Timeline

- 2026-10-26: disclosed

## References

- [https://drive.google.com/drive/folders/1v9qTuMbrKnJStOeWqS-PDXz1KbmMheQ3?usp=drive_link](https://drive.google.com/drive/folders/1v9qTuMbrKnJStOeWqS-PDXz1KbmMheQ3?usp=drive_link)
- [https://github.com/kameleo-io/kameleo/releases/tag/5.2.0](https://github.com/kameleo-io/kameleo/releases/tag/5.2.0)

## Related threats

- [Kameleo information disclosure in Local API user-info endpoint](https://junglewise.ai/threats/cve-2026-116284-a-security-vulnerability-has-been-detected-in-kameleo-up-to-5-3)
- [Kameleo Local API information disclosure in /profiles](https://junglewise.ai/threats/cve-2026-116283-a-weakness-has-been-identified-in-kameleo-up-to-5-0-1-26-this)
- [Kameleo Cookie Controller information disclosure](https://junglewise.ai/threats/cve-2026-116282-a-security-flaw-has-been-discovered-in-kameleo-up-to-5-3-1)