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CVE-2019-12466

25
FAUCET Score

CVE-2019-12466 describes a Cross-Site Request Forgery (CSRF) vulnerability in Wikimedia MediaWiki versions up to 1.32.1, impacting Debian MediaWiki installations. This high-severity flaw, rated 8.8 CVSS, can be exploited remotely with low attack complexity, requiring user interaction to achieve high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.32.1CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 56th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

composerpatch availablevia ghsa
Product: mediawiki/coreFixed in: 1.27.6
composerpatch availablevia ghsa
Product: mediawiki/coreFixed in: 1.30.2
composerpatch availablevia ghsa
Product: mediawiki/coreFixed in: 1.31.2
composerpatch availablevia ghsa
Product: mediawiki/coreFixed in: 1.32.2

Vendor Advisories (1)

composerGHSA-27fw-r78j-h898high

Wikimedia MediaWiki allows CSRF

May 24, 2022

References

lists.wikimedia.org / pipermail/wikitech-l/2019-June/092152.html
PatchThird Party Advisory
phabricator.wikimedia.org / T25227
PatchThird Party Advisory
seclists.org / bugtraq/2019/Jun/12
Mailing ListThird Party Advisory
debian.org / security/2019/dsa-4460
Third Party Advisory