CVE-2026-6909

MEDIUM EPSS 30.9%

Published May 11, 20261mo ago · Modified Jun 17, 20262w ago

5.1 CVSS 4.0

Medium

Published May 11, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

Description

ATutor is vulnerable to Reflected XSS in /install/upgrade.php endpoint. An attacker can provide a specially crafted URL that, when opened, results in arbitrary JavaScript execution in the victim's browser. Product is no longer actively supported. Maintainers of this project were notified early about this vulnerability, but did not respond with the details of the vulnerability or vulnerable version range. Only version 2.2.4 was tested and confirmed as vulnerable, other versions were not tested but might also be vulnerable.

CVSS Details

Base Score

5.1

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction A

Scope X

Threat Intelligence

EPSS Exploit Probability

30.9% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 2

atutor.github.io https://atutor.github.io/
cert.pl https://cert.pl/en/posts/2026/05/CVE-2026-6909

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.