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Vulnerability details: VCID-3u9z-b8ac-7qg5
Vulnerability ID VCID-3u9z-b8ac-7qg5
Aliases CVE-2019-3808
GHSA-4r2p-wpv5-683w
Summary Moodle XSS Vulnerability A flaw was found in Moodle versions 3.6 to 3.6.1, 3.5 to 3.5.3, 3.4 to 3.4.6, 3.1 to 3.1.15 and earlier unsupported versions. The 'manage groups' capability did not have the 'XSS risk' flag assigned to it, but does have that access in certain places. Note that the capability is intended for use by trusted users, and is only assigned to teachers and managers by default.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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
cvssv3.1 5.4 http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-64395
generic_textual MODERATE http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-64395
epss 0.00416 https://api.first.org/data/v1/epss?cve=CVE-2019-3808
epss 0.00416 https://api.first.org/data/v1/epss?cve=CVE-2019-3808
cvssv3.1 5.4 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3808
generic_textual MODERATE https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3808
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-4r2p-wpv5-683w
cvssv3.1 5.4 https://github.com/moodle/moodle
generic_textual MODERATE https://github.com/moodle/moodle
cvssv3.1 5.4 https://github.com/moodle/moodle/commit/6360f87cdca744a6a71c315853f6d811a3e54e26
generic_textual MODERATE https://github.com/moodle/moodle/commit/6360f87cdca744a6a71c315853f6d811a3e54e26
cvssv3.1 5.4 https://moodle.org/mod/forum/discuss.php?d=381228#p1536765
generic_textual MODERATE https://moodle.org/mod/forum/discuss.php?d=381228#p1536765
cvssv2 4.0 https://nvd.nist.gov/vuln/detail/CVE-2019-3808
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2019-3808
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2019-3808
Reference id Reference type URL
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-64395
https://api.first.org/data/v1/epss?cve=CVE-2019-3808
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3808
https://github.com/moodle/moodle
https://github.com/moodle/moodle/commit/6360f87cdca744a6a71c315853f6d811a3e54e26
https://moodle.org/mod/forum/discuss.php?d=381228#p1536765
https://nvd.nist.gov/vuln/detail/CVE-2019-3808
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:*:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:moodle:moodle:3.6.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:3.6.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:moodle:moodle:3.6.1:*:*:*:*:*:*:*
GHSA-4r2p-wpv5-683w https://github.com/advisories/GHSA-4r2p-wpv5-683w
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 http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-64395
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://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3808
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://github.com/moodle/moodle/commit/6360f87cdca744a6a71c315853f6d811a3e54e26
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://moodle.org/mod/forum/discuss.php?d=381228#p1536765
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:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-3808
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:3.1/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-2019-3808
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 0.60755
EPSS Score 0.00416
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:29:08.149655+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-4r2p-wpv5-683w/GHSA-4r2p-wpv5-683w.json 36.1.3