Vulnerability in Moodle

CVE-2021-40691

A session hijack risk was identified in the Shibboleth authentication plugin.

EPSS: 0.007 (49.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

  • Moodle
  • N/a Moodle — versions 3.11 to 3.11.2, 3.10 to 3.10.6, 3.9 to 3.9.9 and earlier unsupported versions

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-40691?
CVE-2021-40691 is a medium-severity vulnerability in Moodle. CVSS score: 4.3/10. Published 2022-09-29.
How severe is CVE-2021-40691?
Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2021-40691 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.