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Vulnerability details: VCID-kjp3-cs2f-t7b4
Vulnerability ID VCID-kjp3-cs2f-t7b4
Aliases CVE-2019-12471
GHSA-2rm7-xxx8-35jh
Summary MediaWiki Cross-site Scripting (XSS) Wikimedia MediaWiki 1.30.0 through 1.32.1 has XSS. Loading user JavaScript from a non-existent account allows anyone to create the account, and perform XSS on users loading that script. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.
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-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00352 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00352 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
epss 0.00359 https://api.first.org/data/v1/epss?cve=CVE-2019-12471
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-2rm7-xxx8-35jh
cvssv3.1 6.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12471.yaml
generic_textual MODERATE https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12471.yaml
cvssv3.1 6.1 https://github.com/wikimedia/mediawiki
generic_textual MODERATE https://github.com/wikimedia/mediawiki
cvssv3.1 6.1 https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
generic_textual MODERATE https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2019-12471
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2019-12471
cvssv3.1 6.1 https://phabricator.wikimedia.org/T207603
generic_textual MODERATE https://phabricator.wikimedia.org/T207603
cvssv3.1 6.1 https://seclists.org/bugtraq/2019/Jun/12
generic_textual MODERATE https://seclists.org/bugtraq/2019/Jun/12
cvssv3.1 6.1 https://www.debian.org/security/2019/dsa-4460
generic_textual MODERATE https://www.debian.org/security/2019/dsa-4460
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-12471
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11358
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12466
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12467
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12468
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12469
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12470
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12471
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12472
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12473
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12474
https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12471.yaml
https://github.com/wikimedia/mediawiki
https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
https://nvd.nist.gov/vuln/detail/CVE-2019-12471
https://phabricator.wikimedia.org/T207603
https://seclists.org/bugtraq/2019/Jun/12
https://www.debian.org/security/2019/dsa-4460
GHSA-2rm7-xxx8-35jh https://github.com/advisories/GHSA-2rm7-xxx8-35jh
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12471.yaml
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:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/wikimedia/mediawiki
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:N/UI:R/S:C/C:L/I:L/A:N Found at https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
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:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-12471
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:N/UI:R/S:C/C:L/I:L/A:N Found at https://phabricator.wikimedia.org/T207603
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:N/UI:R/S:C/C:L/I:L/A:N Found at https://seclists.org/bugtraq/2019/Jun/12
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:N/UI:R/S:C/C:L/I:L/A:N Found at https://www.debian.org/security/2019/dsa-4460
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 0.576
EPSS Score 0.00352
Published At April 26, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:10:59.278098+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-2rm7-xxx8-35jh/GHSA-2rm7-xxx8-35jh.json 38.0.0