CVE-2026-113683 Details
Description
VPL (Virtual Programming Lab) for Moodle before 5.0.0 contains a reflected cross-site scripting vulnerability that allows remote attackers to inject script via unencoded filename1/filename2 parameters in similarity/diff.php. Attackers can craft a diff.php link with a JavaScript payload that runs when a user holding mod/vpl:similarity opens it, performing actions or disclosing data under their session.
A reflected cross-site scripting vulnerability has been identified in the Virtual Programming Lab (VPL) plugin for Moodle, affecting versions prior to 5.0.0. The issue allows remote attackers to inject scripts through unencoded filename parameters in the similarity/diff.php file. When a user with the mod/vpl:similarity capability opens a crafted diff.php link containing a JavaScript payload, the script executes, potentially performing actions or disclosing information under the user's session.
Users are advised to update to VPL for Moodle version 5.0.0 or later, which includes security enhancements and fixes for this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 20, 2026CISA-ADP
Assessed Oct 23, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| VPL | >= 0, < 5.0.0 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 23, 2026 | CVE Modified | CISA-ADP |
| Oct 20, 2026 | New CVE Received | [email protected] |