CVE-2018-1137

mediumpriority · track · 33EPSS 0.017 · 78 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.74% (78th) EPSS

CVSS 5.5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–8.1

v2.05.5mediumAV:N/AC:L/Au:S/C:N/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 4.9

v3.08.1highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.2

v3.08.1highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Hsecondary · OSV

v3.07.4highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

affected products (9)

Products and version ranges known to be affected.

n/a Moodle 3.x unknown≤ Moodle 3.x unknownenisa_euvdEU
moodle moodle3.1.0 → 3.1.11nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle3.2.0 → 3.2.8nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle3.3.0 → 3.3.5nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle3.4.0 → 3.4.2nvdUScpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Packagist moodle/moodle3.1 → 3.1.12osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.2 → 3.2.9osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.3 → 3.3.6osvUSpkg:composer/moodle/moodle
Packagist moodle/moodle3.4 → 3.4.3osvUSpkg:composer/moodle/moodle

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-vxqh-mx28-7ghwMoodle Portfolio script allows instantiation of class chosen by user2022-05-14ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2018-05-25modified 2026-06-17

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+25188 more

references (5)

External citations — patches, advisories, analysis.

https://moodle.org/mod/forum/discuss.php?d=371204 cnnvd
http://www.securityfocus.com/bid/104307 enisa_euvd
https://moodle.org/mod/forum/discuss.php?d=371204 enisa_euvd
http://www.securityfocus.com/bid/104307Third Party AdvisoryVDB Entrynvd
https://moodle.org/mod/forum/discuss.php?d=371204Vendor Advisorynvd

scry

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