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
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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
Frequently Asked Questions
What is CVE-2021-47857?
How severe is CVE-2021-47857?
How do I fix CVE-2021-47857?
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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-47851Mini Mouse 9.2.0 contains a remote code execution vulnerabil…9.8
- CVE-2021-47852Rockstar Games Launcher 1.0.37.349 contains a privilege esca…8.8
- CVE-2021-47853Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2021-47854DD-WRT version 45723 contains a buffer overflow vulnerabilit…9.8
- CVE-2021-47855Openlitespeed 1.7.9 contains a stored cross-site scripting v…7.2
- CVE-2021-47856Easy Cart Shopping Cart 2021 contains a non-persistent cross…6.4
- CVE-2021-47858Genexis Platinum-4410 P4410-V2-1.31A contains a stored cross…7.2
- CVE-2021-47859ActivIdentity 8.2 contains an unquoted service path vulnerab…8.5
- CVE-2021-47860GetSimple CMS Custom JS 0.1 plugin contains a cross-site req…4.3
- CVE-2021-47861Event Log Explorer 4.9.3 contains an unquoted service path v…8.5
- CVE-2021-47862Hi-Rez Studios 5.1.6.3 contains an unquoted service path vul…8.5
- CVE-2021-47863MacPaw Encrypto 1.0.1 contains an unquoted service path vuln…8.5
Are you affected by CVE-2021-47857?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST