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Vulnerability details: VCID-tq2e-c9ym-a3hj
Vulnerability ID VCID-tq2e-c9ym-a3hj
Aliases CVE-2019-12474
GHSA-2qrr-c2gh-pr35
Summary Wikimedia information leak vulnerability Wikimedia MediaWiki 1.23.0 through 1.32.1 has an information leak. Privileged API responses that include whether a recent change has been patrolled may be cached publicly. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
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 0.00256 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00256 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
epss 0.00261 https://api.first.org/data/v1/epss?cve=CVE-2019-12474
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-2qrr-c2gh-pr35
cvssv3.1 7.5 https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12474.yaml
generic_textual HIGH https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12474.yaml
cvssv3.1 7.5 https://github.com/wikimedia/mediawiki
generic_textual HIGH https://github.com/wikimedia/mediawiki
cvssv3.1 7.5 https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
generic_textual HIGH https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-12474
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2019-12474
cvssv3.1 7.5 https://phabricator.wikimedia.org/T212118
generic_textual HIGH https://phabricator.wikimedia.org/T212118
cvssv3.1 7.5 https://seclists.org/bugtraq/2019/Jun/12
generic_textual HIGH https://seclists.org/bugtraq/2019/Jun/12
cvssv3.1 7.5 https://www.debian.org/security/2019/dsa-4460
generic_textual HIGH https://www.debian.org/security/2019/dsa-4460
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-12474
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-2019-12474.yaml
https://github.com/wikimedia/mediawiki
https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
https://nvd.nist.gov/vuln/detail/CVE-2019-12474
https://phabricator.wikimedia.org/T212118
https://seclists.org/bugtraq/2019/Jun/12
https://www.debian.org/security/2019/dsa-4460
GHSA-2qrr-c2gh-pr35 https://github.com/advisories/GHSA-2qrr-c2gh-pr35
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12474.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:N/S:U/C:H/I:N/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:N/S:U/C:H/I:N/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:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-12474
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:N/S:U/C:H/I:N/A:N Found at https://phabricator.wikimedia.org/T212118
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:N/S:U/C:H/I:N/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:N/S:U/C:H/I:N/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 0.48959
EPSS Score 0.00256
Published At April 26, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:08:45.513538+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-2qrr-c2gh-pr35/GHSA-2qrr-c2gh-pr35.json 38.0.0