CVE-2021-20185
Last modified
CVE-2021-20185 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that messaging did not impose a character limit when sending messages, which could result in client-side (browser) denial of service for users receiving very large messages.. EPSS estimates a 1.38% chance of exploitation in the next 30 days.
Description
It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that messaging did not impose a character limit when sending messages, which could result in client-side (browser) denial of service for users receiving very large messages.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Moodle | Moodle | >= 3.5.0, < 3.5.16 |
| Moodle | Moodle | >= 3.8.0, < 3.8.7 |
| Moodle | Moodle | >= 3.9.0, < 3.9.4 |
| Moodle | Moodle | 3.10.0 |
References
- https://moodle.org/mod/forum/discuss.php?d=417168Patch, Vendor Advisory
- https://moodle.org/mod/forum/discuss.php?d=417168Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20185?
How severe is CVE-2021-20185?
How do I fix CVE-2021-20185?
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-2021-2018Vulnerability in the Advanced Networking Option component of…8.3
- CVE-2021-20180A flaw was found in ansible module where credentials are dis…5.5
- CVE-2021-20181A race condition flaw was found in the 9pfs server implement…7.5
- CVE-2021-20182A privilege escalation flaw was found in openshift4/ose-dock…8.8
- CVE-2021-20183It was found in Moodle before version 3.10.1 that some searc…5.4
- CVE-2021-20184It was found in Moodle before version 3.10.1, 3.9.4 and 3.8.…4.3
- CVE-2021-20186It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 a…5.4
- CVE-2021-20187It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 a…7.2
- CVE-2021-20188A flaw was found in podman before 1.7.0. File permissions fo…7
- CVE-2021-20189Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2021-2019Vulnerability in the MySQL Server product of Oracle MySQL (c…2.7
- CVE-2021-20190A flaw was found in jackson-databind before 2.9.10.7. Faster…8.1
Are you affected by CVE-2021-20185?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST