CVE-2026-64966 Path Traversal leading to Remote Code Execution in ATutor
Instructors can exploit path traversal in ZIP extraction to upload executable files and achieve remote code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-64966?
CVE-2026-64966 is a high-severity path traversal vulnerability in ATutor, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-64966?
How do I fix CVE-2026-64966?
No fix has been published for CVE-2026-64966 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-64966 being exploited?
There is no known exploitation of CVE-2026-64966 in the wild and no public exploit code.
Sources
Also known as GHSA-qc5h-x7gw-7r79.