CVE-2024-28593: moodle Code Injection (CVSS 5.4)

Description

The Chat activity in Moodle 4.3.3 allows students to insert a potentially unwanted HTML A element or IMG element, or HTML content that leads to a performance degradation. NOTE: the vendor's Using_Chat page says "If you know some HTML code, you can use it in your text to do things like insert images, play sounds or create different coloured and sized text." This page also says "Chat is due to be removed from standard Moodle."

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-94 CWE-94

Affected Products

Vendor	Product	Versions
moodle	moodle	All

References

Other References

https://docs.moodle.org/403/en/Using_Chat https://gist.githubusercontent.com/minendie/4f23174687bc4d8eb7f727d9959b5399/raw/9ce573cebcce5521d9d6f826ab68f3780036b874/CVE-2024-28593.txt https://medium.com/%40lamscun/how-do-i-change-htmli-from-low-to-critical-your-email-box-is-safe-e7171efd88fe https://docs.moodle.org/403/en/Using_Chat https://gist.githubusercontent.com/minendie/4f23174687bc4d8eb7f727d9959b5399/raw/9ce573cebcce5521d9d6f826ab68f3780036b874/CVE-2024-28593.txt https://medium.com/%40lamscun/how-do-i-change-htmli-from-low-to-critical-your-email-box-is-safe-e7171efd88fe

Frequently Asked Questions

What is CVE-2024-28593? +

The Chat activity in Moodle 4.3.3 allows students to insert a potentially unwanted HTML A element or IMG element, or HTML content that leads to a performance degradation. NOTE: the vendor's Using_Chat page says "If you know some HTML code, you can use it in your text to do things like insert images, play sounds or create different coloured and sized text." This page also says "Chat is due to be removed from standard Moodle." It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-28593? +

CVE-2024-28593 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-28593? +

CVE-2024-28593 affects products from moodle, specifically: moodle. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-28593? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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