What’s Vulnerable › Vulnerabilities

CVE-2021-40492

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-03 · updated 2026-06-17
• Weakness: CWE-79

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).

Affected products

• gibbonedu gibbon: 22.0.00

References

• https://gibbonedu.org/
• https://github.com/5qu1n7/CVE-2021-40492
• https://gibbonedu.org/
• https://github.com/5qu1n7/CVE-2021-40492

Get alerted when CVE-2021-40492 or the next vulnerability affects your stack