CVE-2026-34087mediumCWE-200

CVE-2026-34087: medium-severity vulnerability in Wikimedia Foundation OATHAuth

Users API leaks whether privileged users have their user groups disabled for lack of 2FA

Published

Follow this CVE+ Monitor OATHAuth+ Monitor mediawiki

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.1epss 0.3%
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation OATHAuth. This issue affects OATHAuth: from * before 1.43.7, 1.44.4, 1.45.2.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/S:N/AU:Y/R:A/RE:M
Affected products
Wikimedia Foundation · OATHAuth
Related CVEs — Wikimedia Foundation OATHAuth

In the same product, most dangerous first.

CVE-2025-11173NONEReauth for enabling 2FA can be bypassed by submitting a formEPSS 0.4%