CVE-2018-1133

mediumpriority · attend · 56EPSS 0.313 · 98 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

4 exploits · PoC

Likely / severe?

31.3% (98th) EPSS

CVSS 6.5 · 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. A Teacher creating a Calculated question can intentionally cause remote code execution on the server, aka eval injection.

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.08.3highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-94US

exploits (4)

Public proof-of-concept and weaponised exploit code.

EDB-46551Moodle 3.4.1 - Remote Code ExecutionPoC · exploit_db
Feidao-fei/MOODLE-3.X-Remote-Code-Executioncve-2018-1133 moodle athenticated as teacher remote code execution. PoC · poc_in_github
That-Guy-Steve/CVE-2018-1133-ExploitThat-Guy-Steve/CVE-2018-1133-ExploitPoC · poc_in_github
darrynten/MoodleExploitNoodle [Moodle RCE] (v3.4.1) - CVE-2018-1133PoC · poc_in_github

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-xh2j-q4mc-v522Moodle calculated question type allows remote code execution by Question authors2022-05-13ghsa · osvUS
An issue was discovered in Moodle 3.x. A Teacher creating a Calculated question can intentionally cause remote code execution on the server, aka eval injection.

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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+10437 more

references (12)

External citations — patches, advisories, analysis.

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