Skip to content
Fencer Vulns
high 8.1

CVE-2018-1137 json

Moodle Portfolio script allows instantiation of class chosen by user

published 2018-05-25 8 y ago modified 2026-06-17 4 mo ago also GHSA-vxqh-mx28-7ghw , EUVD-2022-5458

cvss
8.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

An issue was discovered in Moodle 3.x. By substituting URLs in portfolios, users can instantiate any class. This can also be exploited by users who are logged in as guests to create a DDoS attack.

Patch / fix

  • packagist moodle/moodle 3.1.12, 3.2.9, 3.3.6, 3.4.3

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-2018-1137 updated

moodle: Six security issues fixed in the latest release

  • 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

Exploit prediction

1.71% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.1 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
NVD 2.0 5.5 AV:N/AC:L/Au:S/C:N/I:P/A:P
GitHub 3.0 8.1 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist moodle/moodle
>=3.1, <3.1.12
>=3.2, <3.2.9
>=3.3, <3.3.6
>=3.4, <3.4.3
3.1.12
3.2.9
3.3.6
3.4.3

Affected products

  • n/a Moodle 3.x unknown

Classification

Weakness
  • CWE-20 Improper Input Validation

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.