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Fencer Vulns
critical 9.8

CVE-2022-40314 json

Moodle remote code execution

published 2022-09-30 4 y ago modified 2026-09-08 2 mo ago also BIT-moodle-2022-40314 , EUVD-2022-6989 , GHSA-2hmm-q272-xmhf

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

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

Patch / fix

  • packagist moodle/moodle 3.9.17, 3.11.10, 4.0.4
  • bitnami moodle 3.9.17, 3.11.10, 4.0.4
  • moodle moodle 3.9.17, 3.11.10, 4.0.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-40314 updated

moodle: Remote code execution risk when restoring malformed backup file

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
17 mo ago

Exploit prediction

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
<3.9.17
>=3.11, <3.11.10
>=4.0, <4.0.4
3.9.17
3.11.10
4.0.4
bitnami moodle
>=3.9.0, <3.9.17
>=3.11.0, <3.11.10
>=4.0.0, <4.0.4
3.9.17
3.11.10
4.0.4

Affected products

  • n/a moodle

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data
  • CWE-94 Improper Control of Generation of Code

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.