Vulnerability · Published Aug 20, 2026 · Assigned by CERT-PL

CVE-2026-64966Path Traversal leading to Remote Code Execution in ATutor

High 8.7

In plain English

A high-severity path traversal in ATutor from ATutor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.7%top 45.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
ATutor	ATutor	2.2.4

Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

References

https://cert.pl/en/posts/2026/08/CVE-2026-64960 third-party-advisory
https://atutor.github.io/ product