XSS in Moodle
CVE-2019-3847
A vulnerability was found in moodle before versions 3.6.3, 3.5.5, 3.4.8 and 3.1.17. Users with the "login as other users" capability (such as administrators/managers) can access other users' Dashboards, but the JavaScript those other users may have added to their Dashboard was not being escaped when being viewed by the user logging in on their behalf.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.022 (82.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Moodle
- [Unknown] Moodle — versions 3.6 to 3.6.2, 3.5 to 3.5.4, 3.4 to 3.4.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/107489 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- moodle.org/mod/forum/discuss.php (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-3847?
- CVE-2019-3847 is a medium-severity vulnerability in Moodle, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2019-03-27.
- How severe is CVE-2019-3847?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2019-3847 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.