CVE-2026-100244CWE-200information-disclosure

CVE-2026-100244

High · published September 29, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
16.1
In the wild
Unconfirmed
What it is

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows Excavation.

This issue affects Mediawiki - CentralAuth Extension: from * before 1.46.1, 1.45.5, 1.43.10.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00255 · 16.1th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-09-29T21:17Z
References (2)
https://gerrit.wikimedia.org/r/q/Ifd262c11300dd0355e177d6185bcd704d2720a47 · c4f26cc8-17ff-4c99-b5e2-38fc1793eacchttps://phabricator.wikimedia.org/T432789 · c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
EPSS history
Timeline
  • 01 OCT 03:44Z
    EPSS moved — → 0%
    epss
  • 29 SEP 16:48Z
    CentralAuth exposes locally suppressed block information via globaluserinfo API and Special:CentralAuth (incomplete fix for CVE-2025-62669)
    cvelistv5