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CVE-2023-28330

22
FAUCET Score

CVE-2023-28330 is an arbitrary file read vulnerability in Moodle, stemming from insufficient sanitization during backup processes. This medium-severity flaw (CVSS 6.5) allows authenticated teachers, managers, or administrators to access sensitive files, with a low attack complexity and high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
> 3.9.0, < 3.9.20CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
> 3.11.0, < 3.11.13CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
> 4.0.0, < 4.0.7CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
3.9.0CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:3.9.0:-:*:*:*:*:*:*
3.11.0CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:3.11.0:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 78th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 4.1.2
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 4.0.7
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.11.13
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.9.20

Vendor Advisories (1)

composerGHSA-56r9-72vx-q989medium

Moodle arbitrary file read vulnerability

Mar 23, 2023

References

bugzilla.redhat.com / show_bug.cgi
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/3QZN34VSF4HTCW3C3ZP2OZYSLYUKADPF
moodle.org / mod/forum/discuss.php
PatchVendor Advisory