# CVE-2026-64966: ATutor path traversal in ZIP extraction

Source: https://junglewise.ai/threats/cve-2026-64966-atutor-path-traversal-in-zip-extraction  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-20. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-64966 · Severity: info · CVSS 8.8 · Published 2026-08-20

ATutor is an open-source learning management system used to create and deliver online courses. A path traversal vulnerability in its ZIP file extraction functionality allows instructors to upload specially crafted archives that extract files outside the intended directory, enabling them to place executable code in the web root and gain complete control of the server.

Technologies: [ATutor](https://junglewise.ai/threats/technologies/atutor). Vendors: [ATutor](https://junglewise.ai/threats/vendors/atutor).

## Quick answers

**Is CVE-2026-64966 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-64966 being exploited in the wild.

**How severe is CVE-2026-64966?** Informational severity, with a CVSS score of 8.8, published 20 August 2026.

**Which products and versions are affected?** ATutor 2.2.4 confirmed vulnerable; other versions untested.

**Is there a fix for CVE-2026-64966?** 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-2026-64966 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-64966?** Check whether you run ATutor 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 (CWE-22) in ATutor's ZIP extraction handling. An instructor-authenticated attacker can craft a malicious ZIP archive with directory traversal sequences (e.g., "../") in file paths that, when extracted, escape the intended extraction directory. By placing a .phtml (PHP-executable) file in the web root, the attacker achieves remote code execution with web server privileges. The vulnerability requires instructor-level authentication and knowledge of the target system. ATutor 2.2.4 is confirmed vulnerable; the product is no longer actively maintained and no patch has been released.

## Affected products

- ATutor ATutor 2.2.4 confirmed vulnerable; other versions untested

## Timeline

- 2026-08-20: disclosed
- 2026-08-20: advisory: CERT Polska advisory CVE-2026-64966

## References

- [https://atutor.github.io/](https://atutor.github.io/)
- [https://cert.pl/en/posts/2026/08/CVE-2026-64960](https://cert.pl/en/posts/2026/08/CVE-2026-64960)

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- [ATutor server-side request forgery in import functionality](https://junglewise.ai/threats/cve-2026-64968-atutor-server-side-request-forgery-in-import-functionality)