What is CVE-2022-40314?

CVE-2022-40314 is a critical-severity vulnerability in Moodle, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2022-09-30.

How severe is CVE-2022-40314?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-40314 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Deserialization in Moodle

CVE-2022-40314

A remote code execution risk when restoring backup files originating from Moodle 1.9 was identified.

Vulnerability class: Insecure Deserialization

EPSS: 0.016 (73.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Moodle
N/a Moodle — versions 4.0 to 4.0.3, 3.11 to 3.11.9, 3.9 to 3.9.16 and earlier unsupported versions

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

Public proof-of-concept exploits

jev770/badmoodle-scan

References

patrick@puiterwijk.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
patrick@puiterwijk.org (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2022-40314?: CVE-2022-40314 is a critical-severity vulnerability in Moodle, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2022-09-30.
How severe is CVE-2022-40314?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-40314 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.