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Vulnerability details: VCID-y8up-cqtu-jkdw
Vulnerability ID VCID-y8up-cqtu-jkdw
Aliases CVE-2019-18210
GHSA-q6vw-27c6-jv9c
Summary Cross-site Scripting Persistent XSS in `/course/modedit.php` of Moodle allows authenticated users (Teacher) to inject JavaScript into the session of another user (e.g., enrolled student or site administrator) via the `introeditor[text]` parameter.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.0044 https://api.first.org/data/v1/epss?cve=CVE-2019-18210
cvssv3.1 5.4 https://docs.moodle.org/38/en/Teacher_role
generic_textual MODERATE https://docs.moodle.org/38/en/Teacher_role
cvssv3.1 5.4 https://gist.github.com/Danbardo/4a6b0fe8cb21ec6d7c54e6ac951bdb0a
generic_textual MODERATE https://gist.github.com/Danbardo/4a6b0fe8cb21ec6d7c54e6ac951bdb0a
cvssv3.1 5.4 https://github.com/moodle/moodle
generic_textual MODERATE https://github.com/moodle/moodle
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2019-18210
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2019-18210
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-18210
https://docs.moodle.org/38/en/Teacher_role
https://gist.github.com/Danbardo/4a6b0fe8cb21ec6d7c54e6ac951bdb0a
https://github.com/moodle/moodle
CVE-2019-18210 https://nvd.nist.gov/vuln/detail/CVE-2019-18210
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://docs.moodle.org/38/en/Teacher_role
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://gist.github.com/Danbardo/4a6b0fe8cb21ec6d7c54e6ac951bdb0a
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N 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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-18210
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 0.63483
EPSS Score 0.0044
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:19:47.236945+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/moodle/moodle/CVE-2019-18210.yml 38.6.0