CVE-2026-34092: Block UI elements in 'tools'-sidebar shows presence of an autoblocked IP

Q: What is the severity of CVE-2026-34092?

CVE-2026-34092 is classified as a moderate severity vulnerability due to the exposure of sensitive information.

Q: How do I fix CVE-2026-34092?

To fix CVE-2026-34092, upgrade to MediaWiki version 1.43.8, 1.44.5, or 1.45.3, which contain the necessary patches.

Q: What types of systems are affected by CVE-2026-34092?

CVE-2026-34092 affects installations of Wikimedia Foundation MediaWiki versions up to 1.43.7, 1.44.4, and 1.45.2.

Q: What is the impact of CVE-2026-34092?

CVE-2026-34092 can lead to the exposure of sensitive information to unauthorized actors through a vulnerability in the tools-sidebar.

Q: When was CVE-2026-34092 disclosed?

CVE-2026-34092 was disclosed in 2026, and users are urged to address the vulnerability promptly.

Published May 11, 2026

Updated

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Skin/Skin.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.

Affected Software

4 affected components

Wikimedia Foundation MediaWiki<1.43.7, <1.44.4, <1.45.2

MediaWiki MediaWiki<1.43.7

MediaWiki MediaWiki>=1.44.0<1.44.4

MediaWiki MediaWiki>=1.45.0<1.45.2

Event History

May 11, 2026

CVE Published

via MITRE·03:00 PM

Data Sourced

via MITRE·03:00 PM

DescriptionWeakness

Data Sourced

via NVD·04:17 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2026-34092?

CVE-2026-34092 is classified as a moderate severity vulnerability due to the exposure of sensitive information.

How do I fix CVE-2026-34092?

To fix CVE-2026-34092, upgrade to MediaWiki version 1.43.8, 1.44.5, or 1.45.3, which contain the necessary patches.

What types of systems are affected by CVE-2026-34092?

CVE-2026-34092 affects installations of Wikimedia Foundation MediaWiki versions up to 1.43.7, 1.44.4, and 1.45.2.

What is the impact of CVE-2026-34092?

CVE-2026-34092 can lead to the exposure of sensitive information to unauthorized actors through a vulnerability in the tools-sidebar.

When was CVE-2026-34092 disclosed?

CVE-2026-34092 was disclosed in 2026, and users are urged to address the vulnerability promptly.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.