CVE-2019-3847
Moodle XSS Vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2019-3847- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2022-5022
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.
- Record
EUVD-2022-5022- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qrcj-6fjw-3h9h
Moodle XSS Vulnerability
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.
- Record
GHSA-qrcj-6fjw-3h9h- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2019-3847- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2019-3847- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-qrcj-6fjw-3h9h
Moodle XSS Vulnerability
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.
- Record
GHSA-qrcj-6fjw-3h9h- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVUBUNTU-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.
- Record
UBUNTU-CVE-2019-3847- CVSS 3.1
- 4.8 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N - CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
3.6.0 up to 3.6.3 | 3.6.3 |
moodle/moodlePackagist |
3.5.0 up to 3.5.5 | 3.5.5 |
moodle/moodlePackagist |
3.2.0 up to 3.4.8 | 3.4.8 |
moodle/moodlePackagist |
before 3.1.17 | 3.1.17 |
moodle/moodlePackagist |
3.6.0 up to 3.6.3, plus listed versions v3.6.0v3.6.1v3.6.2 |
3.6.3 |
moodle/moodlePackagist |
3.5.0 up to 3.5.5, plus listed versions v3.5.0v3.5.1v3.5.2v3.5.3v3.5.4 |
3.5.5 |
moodle/moodlePackagist |
3.2.0 up to 3.4.8, plus listed versions v3.2.0v3.2.1v3.2.2v3.2.3v3.2.4 Show 31 moreShow lessv3.2.5v3.2.6v3.2.7v3.2.8v3.2.9v3.3.0v3.3.0-betav3.3.0-rc1v3.3.0-rc2v3.3.0-rc3v3.3.1v3.3.2v3.3.3v3.3.4v3.3.5v3.3.6v3.3.7v3.3.8v3.3.9v3.4.0v3.4.0-betav3.4.0-rc1v3.4.0-rc2v3.4.0-rc3v3.4.1v3.4.2v3.4.3v3.4.4v3.4.5v3.4.6v3.4.7 |
3.4.8 |
moodle/moodlePackagist |
before 3.1.17, plus listed versions v2.3.10v2.3.11v2.3.4v2.3.5v2.3.6 Show 45 moreShow lessv2.3.7v2.3.8v2.3.9v2.4.0v2.4.0-rc1v2.4.1v2.4.10v2.4.11v2.4.2v2.4.3v2.4.4v2.4.5v2.4.6v2.4.7v2.4.8v2.4.9v2.5.0v2.5.0-betav2.5.0-rc1v2.5.1v2.5.2v2.5.3v2.5.4v2.5.5v2.5.6v2.5.7v2.5.8v2.5.9v2.6.0v2.6.0-betav2.6.0-rc1v2.6.1v2.6.10v2.6.11v2.6.2v2.6.3v2.6.4v2.6.5v2.6.6v2.6.7v2.6.8v2.6.9v2.7.0v2.7.0-betav2.7.0-rc1 |
3.1.17 |
moodleUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 2.7.9+dfsg-12.7.10+dfsg-12.7.11+dfsg-12.7.11+dfsg-22.7.12+dfsg-13.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
moodleUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 3.0.3+dfsg-0ubuntu13.0.3+dfsg-0ubuntu1+esm1 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | danielthatcher/moodle-login-csrf | 2019-04-04 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-3847 is a medium vulnerability (CVSS 5.4) in [unknown] Moodle, published March 27, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.22%, the 82nd percentile. Fixed in moodle/moodle 3.6.3.
References
securityfocus.com/bid/107489
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3847
moodle.org/mod/forum/discuss.php?d=384010
nvd.nist.gov/vuln/detail/CVE-2019-3847
github.com/moodle/moodle/commit/070f24d006eab6b958eb083530de159b43c538ed
Show 9 moreShow less
web.archive.org/web/20200227082922/http://www.securityfocus.com/bid/107489
ubuntu.com/security/CVE-2019-3847
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-63786
cve.org/CVERecord?id=CVE-2019-3847
Left out here: 86 versions. The JSON record has them.