Improper input validation in Moodle

CVE-2020-1756

In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, insufficient input escaping was applied to the PHP unit webrunner admin tool.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.2% 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-2020-1756: held from 0.010 to 0.010.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

  • Moodle
  • Moodle — versions 3.8 to 3.8.1, 3.7 to 3.7.4, 3.6 to 3.6.8, 3.5 to 3.5.10 and earlier unsupported versions

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-1756?
CVE-2020-1756 is a high-severity vulnerability in Moodle, classified under Improper Input Validation. CVSS score: 7.2/10. Published 2022-08-16.
How severe is CVE-2020-1756?
High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2020-1756 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.