CVE-2023-5539

Moodle: authenticated remote code execution risk in lesson

Description

A remote code execution risk was identified in the Lesson activity. By default this was only available to teachers and managers.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 1.83% Top 20%
Vendor Advisory moodle.org
Published at:
Updated at:

References

Link Tags
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-79408 patch
https://bugzilla.redhat.com/show_bug.cgi?id=2243352 patch third party advisory issue tracking
https://moodle.org/mod/forum/discuss.php?d=451580 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-5539?
CVE-2023-5539 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5539?
To fix CVE-2023-5539, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-5539 being actively exploited in the wild?
It is possible that CVE-2023-5539 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5539?
CVE-2023-5539 affects .
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.