CVE-2021-47857
Last modified
CVE-2021-47857 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Moodle | Moodle | 3.10.3 |
References
- https://moodle.org/Product
- https://www.exploit-db.com/exploits/49714Exploit, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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