Read the docs
TI-2021-17539 Aliases CVE-2021-40492GHSA-qxgj-gjcq-4732

A reflected XSS vulnerability exists in multiple pages in version 22 of the Gibbon…

Priority LOW 32CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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).

Why it matters now

EPSS 0.02316 83rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gibbonedu:gibbon:22.0.00:*:*:*:*:*:*:*22.0.00Vulnerablegibbonedu
  • cpe:2.3:a:gibbonedu:gibbon:22.0.00:*:*:*:*:*:*:* Versions 22.0.00 Vulnerable ·gibbonedu

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40492
  2. 2026-10-03 Alias added: GHSA-qxgj-gjcq-4732

References

Advisory 2

  • TI-2023-24630 GibbonEdu Gibbon version 25.0.1 and before allows Arbitrary File Write because… CVSS 3.1CRITICAL 9.8
  • TI-2024-16254 Gibbon through 26.0.00 allows /modules/School%20Admin/messengerSettings.php Server Side… CVSS 3.1CRITICAL 9.8
  • TI-2023-17331 Gibbon v25.0.0 is vulnerable to a Local File Inclusion (LFI) where it's possible to… CVSS 3.1CRITICAL 9.8
  • TI-2024-16255 Gibbon through 26.0.00 allows remote authenticated users to conduct PHP deserialization… CVSS 3.1HIGH 8.8
  • TI-2023-24632 GibbonEdu Gibbon through version 25.0.0 allows Directory Traversal via the report… CVSS 3.1HIGH 7.2
  • TI-2024-23116 cross-site scripting (XSS) vulnerability in Gibbon Core v26.0.00 allows an attacker to… CVSS 3.1MEDIUM 6.1
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences