RenderBlocking is a MediaWiki extension that allows interface administrators to specify render-blocking CSS and JavaScript. Prior to 0.1.1, there is Stored XSS in renderblocking-css with Inline Assets mode. $wgRenderBlockingInlineAssets = true and editsitecss user rights are required. This vulnerability is fixed in 0.1.1.
History

Wed, 11 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 11 Mar 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Lihaohong6
Lihaohong6 renderblocking
Vendors & Products Lihaohong6
Lihaohong6 renderblocking

Tue, 10 Mar 2026 18:00:00 +0000

Type Values Removed Values Added
Description RenderBlocking is a MediaWiki extension that allows interface administrators to specify render-blocking CSS and JavaScript. Prior to 0.1.1, there is Stored XSS in renderblocking-css with Inline Assets mode. $wgRenderBlockingInlineAssets = true and editsitecss user rights are required. This vulnerability is fixed in 0.1.1.
Title RenderBlocking has Stored XSS in renderblocking-css with Inline Assets mode
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-10T17:40:38.098Z

Updated: 2026-03-11T14:18:37.430Z

Reserved: 2026-03-07T17:53:48.816Z

Link: CVE-2026-30977

cve-icon Vulnrichment

Updated: 2026-03-11T14:18:27.685Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-10T18:18:56.370

Modified: 2026-03-11T13:53:20.707

Link: CVE-2026-30977

cve-icon Redhat

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