EUVD-2026-16660
GHSA-jcp9-3x5h-m222
CVSS Vector
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
Lifecycle Timeline
4Description
A reflected Cross-Site Scripting (XSS) vulnerability has been discovered in Clickedu. This vulnerability allows an attacker to execute JavaScript code in the victim’s browser by sending them a malicious URL using the endpoint “/user.php/”. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on the user’s behalf.
Analysis
Clickedu contains a reflected XSS vulnerability in the /user.php/ endpoint that permits remote attackers to execute arbitrary JavaScript in a victim's browser via malicious URL parameters, enabling session hijacking, credential theft, and unauthorized actions. The vulnerability affects all versions of Sanoma's Clickedu product (per CPE cpe:2.3:a:sanoma:clickedu:*:*:*:*:*:*:*:*) and a vendor patch is available. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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External POC / Exploit Code
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