XSS in Gibbonedu Gibbon
CVE-2021-40492
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).
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.023 (82.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Gibbonedu Gibbon — versions 22.0.00
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gibbonedu.org/ (Vendor Advisory)
- github.com/5qu1n7/CVE-2021-40492 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-40492?
- CVE-2021-40492 is a medium-severity vulnerability in Gibbonedu Gibbon, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-03.
- How severe is CVE-2021-40492?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-40492 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.