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MEDIUM · 5.3

CVE-2021-20185

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 servi...

Vulnerability 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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW

Affected Products

VendorProductVersions
MoodleMoodle>= 3.5.0, < 3.5.16

Related Weaknesses (CWE)

CWE-770CWE-400

References

FAQ

What is CVE-2021-20185?

CVE-2021-20185 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 servi...

How severe is CVE-2021-20185?

CVE-2021-20185 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20185?

Check the references section above for vendor advisories and patch information. Affected products include: Moodle Moodle.