Medium severity · published Jan 28, 2021
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…
5.3
CVSS
1.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Moodle · Moodle
3.5.0 before 3.5.16; 3.8.0 before 3.8.7; 3.9.0 before 3.9.4; 3.10.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20185
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20185
Patch
https://moodle.org/mod/forum/discuss.php?d=417168
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