Resource exhaustion in Moodle

CVE-2020-14322

In Moodle before 3.9.1, 3.8.4, 3.7.7 and 3.5.13, yui_combo needed to limit the amount of files it can load to help mitigate the risk of denial of service.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-14322: held from 0.009 to 0.009.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

  • Moodle — versions 3.9.0
  • Moodle — versions Moodle 3.9, 3.8 to 3.8.3, 3.7 to 3.7.6, 3.5 to 3.5.12 and earlier unsupported versions

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-14322?
CVE-2020-14322 is a high-severity vulnerability in Moodle, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-08-16.
How severe is CVE-2020-14322?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-14322 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.