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No exploitation reportedFix available

CVE-2019-12474

No exploitation reported by the sources we read.

  • Published2019-07-10
  • Fixed in1.32.2 · 1.31.2 · 1.30.2 · 1.27.6

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2019-07-1016:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-12474?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-12474?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Mediawiki
BranchAffectedFixed in
1.32≥ 1.32.0, < 1.32.21.32.2
1.31≥ 1.31.0, < 1.31.21.31.2
1.30≥ 1.30.0, < 1.30.21.30.2
1.x≥ 1.23.0, < 1.27.61.27.6
1.27≥ 1.27.0, < 1.27.61.27.6
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Mediawiki to 1.32.2 · 1.31.2 · 1.30.2 · 1.27.6

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • FIRST EPSSEPSS score2.0 %2026-10-22
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2019-07-10
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2019-12474?

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.

Is CVE-2019-12474 actively exploited?

Active exploitation of CVE-2019-12474 has not been confirmed. Its EPSS score was 2.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-12474?

CVE-2019-12474 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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