RCE in Moodle
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."
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (43.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Moodle — versions 4.3.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- medium.com/@lamscun/how-do-i-change-htmli-from-low-to-critical-your-email-box-i… (Not Applicable)
- gist.githubusercontent.com/minendie/4f23174687bc4d8eb7f727d9959b5399/raw/9ce573… (Third Party Advisory)
- docs.moodle.org/403/en/Using_Chat (Product)
Frequently asked questions
- What is CVE-2024-28593?
- CVE-2024-28593 is a medium-severity vulnerability in Moodle, classified under Code Injection. CVSS score: 5.4/10. Published 2024-03-22.
- How severe is CVE-2024-28593?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2024-28593 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.