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Vulnerabilities

Vulnerability · CVE-2021-32476

A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits.

Published Mar 11, 2022 · catalog updated Jun 17, 2026 · A denial-of-service risk was

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2021-32476. EPSS is 1.09%. Act only if a listed version of A denial-of-service risk was is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A denial-of-service risk was).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.09%
Remediation
Version ranges on file
Affected products
cpe moodle/moodle

A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits. Moodle versions 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions are affected.

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/moodle< 3.10.4
  • cpe moodle/moodle< 3.5.18
  • cpe moodle/moodle< 3.8.9
  • cpe moodle/moodle< 3.9.7

How to fix CVE-2021-32476

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-2021-32476. EPSS is 1.09%. Act only if a listed version of A denial-of-service risk was is installed.

Which versions are affected?

Compare what you have installed with < 3.10.4, < 3.5.18, < 3.8.9, < 3.9.7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 1.09%. 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 11, 2022 · Monitored products — high

    Detected

    A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits. Moodle versions 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions are affected.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits. Moodle versions 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions are affected.

Sources

  • CVE.orgVulnerability recordCVE-2021-32476

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2021-32476

    A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits. Moodle versions 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions are affected.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

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