CVE-2026-64966
Received Received - Intake

Path Traversal in ATutor Leading to Remote Code Execution

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: CERT.PL

Description
ATutor is vulnerable to a Path Traversal vulnerability in ZIP extraction functionality. An attacker with instructor privileges can upload and extract a specially crafted ZIP archive, causing files to be written outside the intended extraction directory. This allows an attacker to place a server-executable .phtml file in the web root and achieve remote code execution with web server privileges on the underlying server. Product is no longer actively supported and the vulnerabilities have not been fixed. Only version 2.2.4 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-64966
EUVD
EUVD-2026-63367

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
atutor atutor to 2.2.4 (exc)
atutor atutor to 2.2.4 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

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Executive Summary

ATutor has a Path Traversal vulnerability in its ZIP extraction feature. An attacker with instructor access can upload a malicious ZIP file that extracts files outside the intended directory. This could allow placing a .phtml file in the web root, leading to remote code execution with the server's privileges.

Detection Guidance

Check for unauthorized .phtml files in the web root directory. Inspect uploaded ZIP archives for suspicious file paths. Review server logs for unusual file extraction activity outside intended directories.

Impact Analysis

If you use ATutor with instructor privileges, an attacker could exploit this to gain control of your server. This could lead to data theft, unauthorized access, or disruption of services. The product is no longer supported, so no fixes are available.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR and HIPAA requirements for data protection. Compliance may be compromised due to potential data breaches or loss of control over systems handling protected information.

Mitigation Strategies

Disable ATutor if possible. Restrict instructor upload privileges. Block .phtml file uploads. Monitor for unauthorized file writes. Consider migrating to a supported alternative as the product is no longer maintained.

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