CVE-2026-100244 json
CentralAuth exposes locally suppressed block information via globaluserinfo API and Special:CentralAuth (incomplete fix for CVE-2025-62669)
published 2026-09-29 40 d ago modified 2026-09-30 39 d ago also EUVD-2026-89090
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Wikimedia Foundation Mediawiki - CentralAuth Extension 1.46.1, 1.45.5, 1.43.10
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 39 d ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Wikimedia Foundation Mediawiki - CentralAuth Extension
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
Sources
- CVE List CVE-2026-100244
- NVD CVE-2026-100244
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.