CVE-2023-28330
Moodle: authenticated arbitrary file read through malformed backup file
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
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
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
CVE-2023-28330- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List
Moodle: authenticated arbitrary file read through malformed backup file
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
CVE-2023-28330- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2023-0878
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
EUVD-2023-0878- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-56r9-72vx-q989
Moodle arbitrary file read vulnerability
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
GHSA-56r9-72vx-q989- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
Moodle: authenticated arbitrary file read through malformed backup file
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
CVE-2023-28330- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVGHSA-56r9-72vx-q989
Moodle arbitrary file read vulnerability
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
GHSA-56r9-72vx-q989- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-28330
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
UBUNTU-CVE-2023-28330- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVBIT-moodle-2023-28330 No score
Moodle: authenticated arbitrary file read through malformed backup file
Insufficient sanitizing in backup resulted in an arbitrary file read risk. The capability to access this feature is only available to teachers, managers and admins by default.
- Record
BIT-moodle-2023-28330- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
moodle/moodlePackagist |
4.1.0 up to 4.1.2 | 4.1.2 |
moodle/moodlePackagist |
4.0.0 up to 4.0.7 | 4.0.7 |
moodle/moodlePackagist |
3.11.0 up to 3.11.13 | 3.11.13 |
moodle/moodlePackagist |
before 3.9.20 | 3.9.20 |
moodleBitnami |
3.9.0 up to 3.9.20, 3.11.0 up to 3.11.13, 4.0.0 up to 4.0.7, 4.1.0 up to 4.1.2 | 3.9.203.11.134.0.74.1.2 |
moodle/moodlePackagist |
4.1.0 up to 4.1.2, plus listed versions v4.1.0v4.1.1 |
4.1.2 |
moodle/moodlePackagist |
4.0.0 up to 4.0.7, plus listed versions v4.0.0v4.0.1v4.0.2v4.0.3v4.0.4v4.0.5v4.0.6 |
4.0.7 |
moodle/moodlePackagist |
3.11.0 up to 3.11.13, plus listed versions v3.11.0v3.11.1v3.11.10v3.11.11v3.11.12 Show 8 moreShow lessv3.11.2v3.11.3v3.11.4v3.11.5v3.11.6v3.11.7v3.11.8v3.11.9 |
3.11.13 |
moodle/moodlePackagist |
before 3.9.20, 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 |
3.9.20 |
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-2023-28330 is a medium vulnerability (CVSS 6.5) in Moodle, published March 23, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.18%, the 68th percentile. Fixed in moodle/moodle 4.1.2.
References
bugzilla.redhat.com/show_bug.cgi?id=2179412
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QZN34VSF4HTCW3C3ZP2OZYSLYUKADPF
moodle.org/mod/forum/discuss.php?d=445062
nvd.nist.gov/vuln/detail/CVE-2023-28330
github.com/moodle/moodle/commit/493205b6b280633bcbc49d2eaf4f61a52252c26c
git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-77204
Show 7 moreShow less
ubuntu.com/security/CVE-2023-28330
cve.org/CVERecord?id=CVE-2023-28330
Left out here: 217 versions. The JSON record has them.