The version of Moodle installed on the remote host is 3.9.x prior to 3.9.11, 3.10.x prior to 3.10.8 or 3.11.x prior to 3.11.4. It is, therefore, affected by multiple vulnerabilities:

- A Remote Code Execution when restoring malformed backup files. (CVE-2021-3943)

- A vulnerable version of mlbackend python library included in Moodle.

- A Cross-Site Scripting (XSS) vulnerability due to the lack of sanitization in or an URL parameter in the filetype site administrator tool. (CVE-2021-43558)

- A Cross-Site Request Forgery (CSRF) vulnerability due to the lack of token check in the 'delete related badge' functionality. (CVE-2021-43559)

- An Insecure Direct Object Reference (IDOR) vulnerability allowing users to fetch other users calendar action events. (CVE-2021-43560)

Note that the scanner has not attempted to exploit this issue but has instead relied only on application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. The "delete related badge" functionality did not include the necessary token check
    to prevent a CSRF risk. (CVE-2021-43559)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. The delete related badge functionality did not include the necessary token check     to prevent a CSRF risk. (CVE-2021-43559)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
113615	Moodle 3.11.x < 3.11.4 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	2/20/2023	3/14/2023	critical
113614	Moodle 3.10.x < 3.10.8 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	2/20/2023	3/14/2023	critical
113613	Moodle 3.9.x < 3.9.11 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	2/20/2023	3/14/2023	critical
434055	SCA: security update for moodle/moodle (GHSA-3jrj-x6cj-97cp)	Tenable Cloud Security	SCA Checks	8/19/2025	7/2/2026	high
434055	SCA: security update for moodle/moodle (GHSA-3jrj-x6cj-97cp)	Tenable Self-Hosted Container Security	SCA Checks	8/19/2025	7/2/2026	high
260624	Linux Distros Unpatched Vulnerability : CVE-2021-43559	Nessus	Misc.	9/2/2025	7/12/2026	high

Detections

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