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Fencer Vulns
high 7.5

CVE-2021-32476 json

Moodle denial-of-service risk in the draft files area

published 2022-03-11 4 y ago modified 2026-09-08 2 mo ago also BIT-moodle-2021-32476 , EUVD-2022-1313 , GHSA-4qxc-qxrp-33cw

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

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.

Patch / fix

  • packagist moodle/moodle 3.5.18, 3.8.9, 3.9.7, 3.10.4
  • bitnami moodle 3.5.18, 3.8.9, 3.9.7, 3.10.4
  • moodle moodle 3.5.18, 3.8.9, 3.9.7, 3.10.4

Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=3.10, <3.10.4
>=3.9, <3.9.7
>=3.8, <3.8.9
>=3.5.17, <3.5.18
3.10.4
3.9.7
3.8.9
3.5.18
bitnami moodle
<3.5.18
>=3.8.0, <3.8.9
>=3.9.0, <3.9.7
>=3.10.0, <3.10.4
3.5.18
3.8.9
3.9.7
3.10.4

Affected products

  • n/a moodle

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.