PT-2026-33201 · Wikimedia Foundation+3 · Oathauth+1

Published 2026-04-03 · Updated 2026-05-14 · CVE-2026-34087

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions OATHAuth versions prior to 1.43.7 OATHAuth versions prior to 1.44.4 OATHAuth versions prior to 1.45.2

Description An issue in Wikimedia Foundation OATHAuth allows the exposure of sensitive information to an unauthorized actor.

Recommendations Update to version 1.43.7 or later. Update to version 1.44.4 or later. Update to version 1.45.2 or later.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-34087

Affected Products

Oathauth

Mediawiki

References · 14

• https://security-tracker.debian.org/tracker/CVE-2026-34087 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-34087 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-34087 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-34087 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-34087 · Security Note
• https://phabricator.wikimedia.org/T412061 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-34087 · Vendor Advisory
• https://lists.wikimedia.org/hyperkitty/list/[e-mail]/thread/DIBLSBHISKX6NFRUFNOGZRVW42E7R2QP · Note
• https://twitter.com/infoflowcloud/status/2053933496733692301 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2053961711581880757 · Twitter Post
• https://twitter.com/CVEnew/status/2053932482165416407 · Twitter Post
• https://t.me/cveNotify/163483 · Telegram Post
• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/OATHAuth/+/1265610 · Note
• https://gerrit.wikimedia.org/r/c/mediawiki/extensions/OATHAuth/+/1265614 · Note