CVE-2021-40492

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CVSS 3.1

6.1 medium

EPSS

2%p82

Published

Sep 3, 2021 (Sep 3, 2021)

Modified

Jun 17, 2026

Description

A reflected XSS vulnerability exists in multiple pages in version 22 of the Gibbon application that allows for arbitrary execution of JavaScript (gibbonCourseClassID, gibbonPersonID, subpage, currentDate, or allStudents to index.php).

Vendors: gibbonedu
Products: gibbon
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (2.3%)

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