XSS in Lihaohong6 Renderblocking

CVE-2026-30977

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (38.2th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

References