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Vulnerability details: VCID-9qcc-px3g-rffq
Vulnerability ID VCID-9qcc-px3g-rffq
Aliases CVE-2018-1137
GHSA-vxqh-mx28-7ghw
Summary Moodle Portfolio script allows instantiation of class chosen by user 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-20 Improper Input Validation
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
System Score Found at
epss 0.00499 https://api.first.org/data/v1/epss?cve=CVE-2018-1137
epss 0.00499 https://api.first.org/data/v1/epss?cve=CVE-2018-1137
cvssv3.1 8.1 https://github.com/moodle/moodle
generic_textual HIGH https://github.com/moodle/moodle
cvssv3.1 8.1 https://moodle.org/mod/forum/discuss.php?d=371204
generic_textual HIGH https://moodle.org/mod/forum/discuss.php?d=371204
cvssv2 5.5 https://nvd.nist.gov/vuln/detail/CVE-2018-1137
cvssv3 8.1 https://nvd.nist.gov/vuln/detail/CVE-2018-1137
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2018-1137
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2018-1137
cvssv3.1 8.1 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-2018-1137
https://github.com/moodle/moodle
https://moodle.org/mod/forum/discuss.php?d=371204
https://nvd.nist.gov/vuln/detail/CVE-2018-1137
http://www.securityfocus.com/bid/104307
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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:N/I:H/A:H Found at https://moodle.org/mod/forum/discuss.php?d=371204
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: AV:N/AC:L/Au:S/C:N/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-1137
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-1137
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:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-1137
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:N/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 0.64875
EPSS Score 0.00499
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:30:49.855872+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-vxqh-mx28-7ghw/GHSA-vxqh-mx28-7ghw.json 36.1.3