{"id":"CVE-2026-30977","aliases":["EUVD-2026-10713","GHSA-4h5r-8rjm-496r"],"status":"published","title":"RenderBlocking has Stored XSS in renderblocking-css with Inline Assets mode","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.","severity":{"version":"4.0","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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00548,"percentile":0.46341,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-03-10T17:40:38Z","modified":"2026-10-28T02:30:34Z","products":[{"vendor":"lihaohong6","product":"renderblocking"}],"references":[{"url":"https://github.com/lihaohong6/RenderBlocking/security/advisories/GHSA-4h5r-8rjm-496r","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/lihaohong6/RenderBlocking/commit/096fc47dad9dca153b02cba3db81f412c87fb2be","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/lihaohong6/RenderBlocking/releases/tag/v0.1.1","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30977.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30977","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-30977","title":"RenderBlocking has Stored XSS in renderblocking-css with Inline Assets mode","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.","status":"published","published":"2026-03-10T17:40:38.098Z","modified":"2026-03-11T14:18:37.43Z","cvss":[{"version":"4.0","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","level":"low","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-10713","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.","status":"published","published":"2026-03-10T17:40:38Z","modified":"2026-03-11T14:18:37Z","cvss":[{"version":"4.0","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","level":"low"}],"updated_at":"2026-11-02T19:25:37.650533Z"}],"nvd":[{"id":"CVE-2026-30977","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.","status":"published","published":"2026-03-10T18:18:56.37Z","modified":"2026-06-17T10:33:15.557Z","cvss":[{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:08.98071Z"}],"osv":[{"id":"CVE-2026-30977","title":"RenderBlocking has Stored XSS in renderblocking-css with Inline Assets mode","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.","status":"published","published":"2026-03-10T17:40:38.098Z","modified":"2026-10-28T02:30:34.99684936Z","cvss":[{"version":"4.0","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","level":"low"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:00.861953Z"}]}}