# CVE-2026-36829: Panabit PAP-XM320 authentication bypass in embedded HTTP server

Source: https://junglewise.ai/threats/cve-2026-36829-panabit-pap-xm320-authentication-bypass-in-embedded-http-server  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-19. Updated: 2026-05-19  
License: CC BY 4.0 with a link back

CVE-2026-36829 · Severity: info · CVSS 9.8 · Published 2026-05-19

Panabit PAP-XM320 is a network management appliance used for traffic control and security auditing. A security flaw in its web management interface allows an attacker to bypass login requirements and gain full administrative access to the device. This could lead to unauthorized network monitoring, data interception, or complete disruption of the organization's internet connectivity.

Technologies: [Panabit PAP-XM320](https://junglewise.ai/threats/technologies/pap-xm320). Vendors: [Panabit](https://junglewise.ai/threats/vendors/panabit).

## Quick answers

**Is CVE-2026-36829 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-36829 being exploited in the wild.

**How severe is CVE-2026-36829?** Informational severity, with a CVSS score of 9.8, published 19 May 2026.

**Which products and versions are affected?** Panabit PAP-XM320 up to and including v7.7.

**Is there a fix for CVE-2026-36829?** 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-2026-36829 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-36829?** Check whether you run Panabit PAP-XM320 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

An authentication bypass vulnerability exists in the embedded HTTP server of Panabit PAP-XM320 through version 7.7. The vulnerability stems from improper sanitization of user-controlled session cookies. The server validates sessions by performing a filesystem existence check using the cookie value as part of a file path. By supplying a specially crafted cookie containing directory traversal sequences (e.g., ../), an attacker can point the check to a known existing file on the system, tricking the server into treating the request as authenticated. This allows a remote, unauthenticated attacker to bypass security controls and access administrative functions.

## Affected products

- Panabit PAP-XM320 up to and including v7.7

## Timeline

- 2026-05-19: disclosed: Initial disclosure date

## References

- [https://secreu.notion.site/CVE-2026-36829-3652c0ab461580e19704e87b18865714](https://secreu.notion.site/CVE-2026-36829-3652c0ab461580e19704e87b18865714)
- [https://www.panabit.com/](https://www.panabit.com/)

## Related threats

- [Panabit PAP-XM320 command injection in ajax_cmd endpoint](https://junglewise.ai/threats/cve-2026-36828-panabit-pap-xm320-command-injection-in-ajax-cmd-endpoint)
- [Panabit PAP-XM320 command injection in web management interface](https://junglewise.ai/threats/cve-2026-36827-panabit-pap-xm320-command-injection-in-web-management-interface)