#VU67468 Cross-site scripting in Moodle

Published: 2022-09-19

Vulnerability identifier: #VU67468

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-40313


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Web applications / Other software

Vendor: moodle.org


The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within Mustache template helpers. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Install updates from vendor's website.

Vulnerable software versions

Moodle: 4.0.0 - 4.0.3, 3.11 - 3.11.9, 3.10.0 - 3.10.11, 3.9.0 - 3.9.16

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability