CVE Catalog

CVE-2026-64972

MediumCVSS 4.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.30%

22th percentile - higher than 22% of all known CVEs

Summary

ATutor is vulnerable to Reflected XSS via popup parameter in preview.php. An authenticated attacker can inject a double quote into the popup parameter, break out of the attribute value, and append a new event handler such as onload. The related preview_top.php file sanitises these parameters, but that does not prevent XSS in the parent frameset rendered by preview.php itself. 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.

Risk Assessment

The vulnerability allows execution of arbitrary JavaScript in the victim's browser, which may lead to session theft, account takeover, or display of fake content. Lack of support means no fixes.

Recommendation

It is recommended to stop using ATutor and migrate to a supported system. If necessary, restrict access to preview.php and apply input filtering.

Other vulnerabilities in ATutor

See all
Original NVD description (English source)

ATutor is vulnerable to Reflected XSS via popup parameter in preview.php. An authenticated attacker can inject a double quote into the popup parameter, break out of the attribute value, and append a new event handler such as onload. The related preview_top.php file sanitises these parameters, but that does not prevent XSS in the parent frameset rendered by preview.php itself. 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS