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Vulnerabilities

Vulnerability · CVE-2023-28330

Insufficient sanitizing in backup resulted in an arbitrary file read risk.

Published Mar 23, 2023 · catalog updated Jun 17, 2026 · Insufficient sanitizing in backup

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-28330. EPSS is 1.18%. Act only if a listed version of Insufficient sanitizing in backup is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Insufficient sanitizing in backup).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.18%
Remediation
Version ranges on file
Affected products
cpe moodle/moodle

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe moodle/moodle3.11.0
  • cpe moodle/moodle3.9.0
  • cpe moodle/moodle4.0.0
  • cpe moodle/moodle> 3.11.0, < 3.11.13
  • cpe moodle/moodle> 3.9.0, < 3.9.20
  • cpe moodle/moodle> 4.0.0, < 4.0.7

How to fix CVE-2023-28330

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-28330. EPSS is 1.18%. Act only if a listed version of Insufficient sanitizing in backup is installed.

Which versions are affected?

Compare what you have installed with 3.11.0, 3.9.0, 4.0.0, > 3.11.0, < 3.11.13, > 3.9.0, < 3.9.20, > 4.0.0, < 4.0.7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation. EPSS 1.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Moodle security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 23, 2023 · Monitored products — high

    Detected

    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.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2023-28330

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-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.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 5, 2026
  • Monitored products — highNov 4, 2026