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CVE-2019-12470

20
FAUCET Score

CVE-2019-12470 is an Incorrect Access Control vulnerability affecting Wikimedia MediaWiki versions up to 1.32.1, where suppressed log entries on the RevisionDelete page could be exposed. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low complexity by a low-privileged attacker to achieve high confidentiality impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE. Patches are available in MediaWiki versions 1.32.2, 1.31.2, 1.30.2, and 1.27.6.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.27.6CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.27.7, < 1.30.2CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.31.0, < 1.31.2CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.32.0, < 1.32.2CPE 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

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.38%
Probability of exploitation in next 30 days
EPSS Percentile
69.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0138 is in the 83rd percentile among its peer group of 21,974 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 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-733q-m38x-q7ccmedium

Wikimedia MediaWik exposed suppressed log in RevisionDelete page

May 24, 2022

References

lists.wikimedia.org / pipermail/wikitech-l/2019-June/092152.html
Mailing ListRelease NotesVendor Advisory
phabricator.wikimedia.org / T222038
Third Party Advisory
seclists.org / bugtraq/2019/Jun/12
Issue TrackingMailing ListThird Party Advisory
debian.org / security/2019/dsa-4460
Third Party Advisory