# CVE-2026-67397: Plesk path traversal leading to arbitrary code execution as root

Source: https://junglewise.ai/threats/cve-2026-67397-plesk-path-traversal-leading-to-arbitrary-code-execution-as-root  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-04. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-67397 · Severity: info · Published 2026-09-04

Plesk, a widely-used hosting control panel for managing web servers and customer accounts, contains a path traversal vulnerability that allows local users to execute arbitrary code with root privileges. An attacker with local access to a Plesk server could exploit this flaw to gain complete control of the system, compromise all hosted websites and customer data, and use the server as a platform for further attacks.

Technologies: [Plesk](https://junglewise.ai/threats/technologies/plesk). Vendors: [Plesk](https://junglewise.ai/threats/vendors/plesk).

## Quick answers

**Is CVE-2026-67397 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-67397 being exploited in the wild.

**How severe is CVE-2026-67397?** Informational severity, published 4 September 2026.

**Which products and versions are affected?** Plesk 18.0.79.9 and earlier, 18.0.80 through 18.0.80.5.

**Is there a fix for CVE-2026-67397?** 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-2026-67397 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2026-67397?** Check whether you run Plesk 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 path traversal flaw in Plesk versions 18.0.79.9 and earlier, and 18.0.80 through 18.0.80.5. A local user can manipulate file paths to bypass directory restrictions and execute arbitrary code with root-level privileges. The attack requires local access to the Plesk server; no network exploitation is possible. Successful exploitation results in complete system compromise with root-level code execution. Patches addressing this vulnerability are available for affected versions.

## Affected products

- Plesk Plesk 18.0.79.9 and earlier, 18.0.80 through 18.0.80.5

## Timeline

- 2026-09-04: disclosed

## References

- [https://support.plesk.com/hc/en-us/articles/43070000520855-Vulnerability-CVE-2026-67397-Arbitrary-code-execution-as-root-in-Plesk](https://support.plesk.com/hc/en-us/articles/43070000520855-Vulnerability-CVE-2026-67397-Arbitrary-code-execution-as-root-in-Plesk)

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