CVE-2026-30977 — RenderBlocking has Stored XSS in renderblocking-css with Inline Assets mode
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…
Published: 2026-03-10 · CVSS: 2.0 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7