Medium severity · published Nov 22, 2021
CVE-2021-43558
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions
6.1
CVSS
0.9%
EPSS
No
On KEV
Description
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. A URL parameter in the filetype site administrator tool required extra sanitizing to prevent a reflected XSS risk.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EP
Extra Packages For Enterprise Linux · Fedoraproject
7.0 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
MO
Moodle · Moodle
through 3.8.8; 3.9.0 before 3.9.11; 3.10.0 before 3.10.8; 3.11.0 before 3.11.4 · source: NVD
Affected product
EP
Extra Packages For Enterprise Linux
Fedoraproject
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43558
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43558
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2021515
Patch
https://moodle.org/mod/forum/discuss.php?d=429097
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