CVE-2026-34095: action=raw with Special:Mypage subpage title responds with "Content-Type: text/html" on ctype=text/javascript request

Q: What is the severity of CVE-2026-34095?

CVE-2026-34095 has been classified as a moderate severity vulnerability affecting specific versions of MediaWiki.

Q: How do I fix CVE-2026-34095?

To fix CVE-2026-34095, upgrade to MediaWiki version 1.43.8, 1.44.5, or 1.45.3 or later.

Q: What is the impact of CVE-2026-34095?

The impact of CVE-2026-34095 may lead to content being exposed as HTML instead of the expected JavaScript, potentially causing unsafe script execution.

Q: Which versions of MediaWiki are affected by CVE-2026-34095?

CVE-2026-34095 affects MediaWiki versions up to 1.43.7, 1.44.4, and 1.45.2.

Q: Is there a workaround for CVE-2026-34095?

There are no official workarounds for CVE-2026-34095; upgrading to the fixed versions is recommended.

Published May 11, 2026

Updated

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Actions/ActionEntryPoint.Php, includes/Request/FauxResponse.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·04:53 PM

Data Sourced

via MITRE·04:53 PM

Description

Data Sourced

via NVD·06:16 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2026-34095?

CVE-2026-34095 has been classified as a moderate severity vulnerability affecting specific versions of MediaWiki.

How do I fix CVE-2026-34095?

To fix CVE-2026-34095, upgrade to MediaWiki version 1.43.8, 1.44.5, or 1.45.3 or later.

What is the impact of CVE-2026-34095?

The impact of CVE-2026-34095 may lead to content being exposed as HTML instead of the expected JavaScript, potentially causing unsafe script execution.

Which versions of MediaWiki are affected by CVE-2026-34095?

CVE-2026-34095 affects MediaWiki versions up to 1.43.7, 1.44.4, and 1.45.2.

Is there a workaround for CVE-2026-34095?

There are no official workarounds for CVE-2026-34095; upgrading to the fixed versions is recommended.

Company

Resources

Contact

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