Description

Moodle 3.10.3 contains a persistent cross-site scripting vulnerability in the calendar event subtitle field that allows attackers to inject malicious scripts. Attackers can craft a calendar event with malicious JavaScript in the subtitle track label to execute arbitrary code when users view the event.

INFO

Published Date :

2026-01-21T17:27:39.382Z

Last Modified :

2026-03-05T01:28:54.718Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2021-47857 vulnerability.

Vendors Products
Moodle
  • Moodle
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47857.

URL Resource
https://moodle.org/ cve-icon cve-icon
https://www.exploit-db.com/exploits/49714 cve-icon cve-icon
https://www.vulncheck.com/advisories/moodle-label-persistent-cross-site-scripting cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact