{"id":"EUVD-2026-38336","revision":"a50dff4e6c964f16af80329c4ccf0216","records":[{"revision":"a50dff4e6c964f16af80329c4ccf0216","observedAt":"2026-10-30T09:50:53.296+00:00","statement":{"source":"euvd","id":"EUVD-2026-38336","aliases":["CVE-2026-54298","GHSA-jrpj-wcv7-9fh9"],"title":"Astro is a web framework. Prior to 6.4.6, the spreadAttributes function in Astro's server-side rendering pipeline iterates over object keys and passes them directly to addAttribute, which interpolates the key into the HTML output without es…","description":"Astro is a web framework. Prior to 6.4.6, the spreadAttributes function in Astro's server-side rendering pipeline iterates over object keys and passes them directly to addAttribute, which interpolates the key into the HTML output without escaping. When a developer uses the spread syntax {...props} on an HTML element and the object keys come from an untrusted source (API, CMS, URL parameters), an attacker can inject arbitrary HTML attributes including event handlers like onmousemove, onclick, or break out of the attribute context entirely to inject new elements. This vulnerability is fixed in 6.4.6.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","score":4.2,"severity":null}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-jrpj-wcv7-9fh9"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38336","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 22, 2026, 5:33:15 PM","dateUpdated":"Jun 23, 2026, 4:11:01 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-38336","identifiers":["EUVD-2026-38336","CVE-2026-54298","GHSA-jrpj-wcv7-9fh9"]},"retained":false,"historicalAffected":[]}],"coverage":[]}