{"id":"CVE-2026-50146","revision":"86ba5a69b88d443e8ba458cf1afd0ed7","records":[{"revision":"86ba5a69b88d443e8ba458cf1afd0ed7","observedAt":"2026-10-27T13:11:58.28+00:00","statement":{"source":"nvd","id":"CVE-2026-50146","aliases":[],"title":"Astro is a web framework. Prior to 6.3.3, when a component uses a client:* directive, Astro inserts named slot content into a data-astro-template attribute without HTML escaping the slot name allowing an attacker to break out of the attribu…","description":"Astro is a web framework. Prior to 6.3.3, when a component uses a client:* directive, Astro inserts named slot content into a data-astro-template attribute without HTML escaping the slot name allowing an attacker to break out of the attribute context and inject arbitrary HTML, resulting in reflected XSS during SSR. This vulnerability is fixed in 6.3.3.","state":0,"publishedAt":"2026-06-22T19:17:04.61+00:00","modifiedAt":"2026-10-25T23:10:00.167+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-8hv8-536x-4wqp"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50146","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-80"],"productCriteria":["cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-06-22T19:17:04.610","lastModified":"2026-10-25T23:10:00.167"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-50146","identifiers":["CVE-2026-50146"]},"retained":false,"historicalAffected":[]}],"coverage":[]}