CVE-2026-100244 Wikimedia Foundation Mediawiki - Exposure of Sensitive Information

Wikimedia Foundation Mediawiki - CentralAuth Extension < 1.46.1, 1.45.5, 1.43.10 contains an exposure of sensitive information vulnerability caused by improper access control, letting unauthorized actors access sensitive data, exploit requires no special privileges.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.26% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Exposure of Sensitive Information
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-200

Vendor fix

Update to version 1.46.1, 1.45.5, 1.43.10 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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