CVE-2018-1045
Moodle XSS Vulnerability
In Moodle 3.x, there is XSS via a calendar event name.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In Moodle 3.x, there is XSS via a calendar event name.
- Record
CVE-2018-1045- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/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
CVE List No score
In Moodle 3.x, there is XSS via a calendar event name.
- Record
CVE-2018-1045- Updated
- 2026-11-02
EUVDEUVD-2022-2543 No score
In Moodle 3.x, there is XSS via a calendar event name.
- Record
EUVD-2022-2543- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-595j-wpfg-23w4
Moodle XSS Vulnerability
In Moodle 3.x, there is XSS via a calendar event name.
- Record
GHSA-595j-wpfg-23w4- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
In Moodle 3.x, there is XSS via a calendar event name.
- Record
CVE-2018-1045- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-595j-wpfg-23w4
Moodle XSS Vulnerability
In Moodle 3.x, there is XSS via a calendar event name.
- Record
GHSA-595j-wpfg-23w4- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-1045
In Moodle 3.x, there is XSS via a calendar event name.
- Record
UBUNTU-CVE-2018-1045- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
3.3 to 3.3.3 | 3.3.4 |
moodle/moodlePackagist |
3.2 to 3.2.6 | 3.2.7 |
moodle/moodlePackagist |
3.1 to 3.1.9 | 3.1.10 |
moodle/moodlePackagist |
3.3 up to 3.3.4, plus listed versions v3.3.0v3.3.0-betav3.3.0-rc1v3.3.0-rc2v3.3.0-rc3v3.3.1v3.3.2v3.3.3 |
3.3.4 |
moodle/moodlePackagist |
3.2 up to 3.2.7, plus listed versions v3.2.0v3.2.0-betav3.2.0-rc1v3.2.0-rc2v3.2.0-rc3 Show 8 moreShow lessv3.2.0-rc4v3.2.0-rc5v3.2.1v3.2.2v3.2.3v3.2.4v3.2.5v3.2.6 |
3.2.7 |
moodle/moodlePackagist |
3.1 up to 3.1.10, plus listed versions v3.1.0v3.1.0-betav3.1.0-rc1v3.1.0-rc2v3.1.1 Show 8 moreShow lessv3.1.2v3.1.3v3.1.4v3.1.5v3.1.6v3.1.7v3.1.8v3.1.9 |
3.1.10 |
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 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1045 is a medium vulnerability (CVSS 5.4) in Moodle, published January 22, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.97%, the 61st percentile. Fixed in moodle/moodle 3.3.4.