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Vulnerability details: VCID-ez7x-sprg-effa
Vulnerability ID VCID-ez7x-sprg-effa
Aliases CVE-2018-1133
GHSA-xh2j-q4mc-v522
Summary Injection Vulnerability An issue was discovered in Moodle. A Teacher creating a Calculated question can intentionally cause remote code execution on the server.
Status Published
Exploitability 2.0
Weighted Severity 8.0
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-94 Improper Control of Generation of Code ('Code Injection')
System Score Found at
epss 0.5403 https://api.first.org/data/v1/epss?cve=CVE-2018-1133
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-xh2j-q4mc-v522
cvssv3.1 8.8 https://github.com/moodle/moodle
generic_textual HIGH https://github.com/moodle/moodle
cvssv3.1 8.8 https://moodle.org/mod/forum/discuss.php?d=371199
generic_textual HIGH https://moodle.org/mod/forum/discuss.php?d=371199
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2018-1133
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2018-1133
cvssv3.1 8.8 https://www.exploit-db.com/exploits/46551
generic_textual HIGH https://www.exploit-db.com/exploits/46551
cvssv3.1 8.8 http://www.securityfocus.com/bid/104307
generic_textual HIGH http://www.securityfocus.com/bid/104307
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-1133
https://github.com/moodle/moodle
https://moodle.org/mod/forum/discuss.php?d=371199
https://www.exploit-db.com/exploits/46551
https://www.exploit-db.com/exploits/46551/
http://www.securityfocus.com/bid/104307
CVE-2018-1133 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/php/webapps/46551.php
CVE-2018-1133 https://nvd.nist.gov/vuln/detail/CVE-2018-1133
GHSA-xh2j-q4mc-v522 https://github.com/advisories/GHSA-xh2j-q4mc-v522
Data source Exploit-DB
Date added March 15, 2019
Description Moodle 3.4.1 - Remote Code Execution
Ransomware campaign use Unknown
Source publication date March 15, 2019
Exploit type webapps
Platform php
Source update date March 15, 2019
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/moodle/moodle
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://moodle.org/mod/forum/discuss.php?d=371199
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-1133
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://www.exploit-db.com/exploits/46551
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at http://www.securityfocus.com/bid/104307
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.98055
EPSS Score 0.5403
Published At May 30, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-30T20:53:37.141441+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/moodle/moodle/CVE-2018-1133.yml 38.6.0