CVE-2018-1082
Moodle Improper Authentication
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
- Record
CVE-2018-1082- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-285, CWE-287
- Updated
- 2026-11-02
CVE List No score
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
- Record
CVE-2018-1082- Weakness
- CWE-285
- Updated
- 2026-11-02
EUVDEUVD-2022-4977 No score
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
- Record
EUVD-2022-4977- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qh8m-6g4p-33h3
Moodle Improper Authentication
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
- Record
GHSA-qh8m-6g4p-33h3- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
- Record
CVE-2018-1082- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-qh8m-6g4p-33h3
Moodle Improper Authentication
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
- Record
GHSA-qh8m-6g4p-33h3- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-1082
A flaw was found in Moodle 3.4 to 3.4.1, and 3.3 to 3.3.4. If a user account using OAuth2 authentication method was once confirmed but later suspended, the user could still login to the site.
- Record
UBUNTU-CVE-2018-1082- CVSS 3.0
- 8.1 High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
3.3 up to 3.3.5 | 3.3.5 |
moodle/moodlePackagist |
3.4 up to 3.4.2 | 3.4.2 |
moodle/moodlePackagist |
3.3 up to 3.3.5, plus listed versions v3.3.0v3.3.0-betav3.3.0-rc1v3.3.0-rc2v3.3.0-rc3 Show 4 moreShow lessv3.3.1v3.3.2v3.3.3v3.3.4 |
3.3.5 |
moodle/moodlePackagist |
3.4 up to 3.4.2, plus listed versions v3.4.0v3.4.0-betav3.4.0-rc1v3.4.0-rc2v3.4.0-rc3v3.4.1 |
3.4.2 |
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-2018-1082 is a high vulnerability (CVSS 8.1) in Moodle, published April 4, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.99%, the 80th percentile. Fixed in moodle/moodle 3.3.5.
References
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-60101
securityfocus.com/bid/103725
moodle.org/mod/forum/discuss.php?d=367939
nvd.nist.gov/vuln/detail/CVE-2018-1082
github.com/advisories/GHSA-qh8m-6g4p-33h3
ubuntu.com/security/CVE-2018-1082
cve.org/CVERecord?id=CVE-2018-1082