XSS in Moodle
CVE-2023-46858
Moodle 4.3 allows /grade/report/grader/index.php?searchvalue= reflected XSS when logged in as a teacher. NOTE: the Moodle Security FAQ link states "Some forms of rich content [are] used by teachers to enhance their courses ... admins and teachers can post XSS-capable content, but students can not."
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% 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 4.3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gist.github.com/Abid-Ahmad/12d2b4878eb731e8871b96b7d55125cd (Broken Link)
- docs.moodle.org/403/en/Security_FAQ (Product)
- packetstormsecurity.com/files/175277/Moodle-4.3-Cross-Site-Scripting.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-46858?
- CVE-2023-46858 is a medium-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-10-29.
- How severe is CVE-2023-46858?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2023-46858 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.