{"action":"Upgrade astro to 6.3.3 or later.","affected":[{"fixed":"6.3.3","introduced":"0"}],"component":"astro","cve_ids":["CVE-2026-50146"],"ecosystem":"npm","epss":0.00268,"exploited":false,"fixed_versions":["6.3.3"],"ghsa_id":"GHSA-8hv8-536x-4wqp","id":"tcs_01M5KFD598P0FXFHE8NV91SMXC","modified_at":"2026-08-12T20:45:07.780403602Z","published_at":"2026-06-16T14:05:06Z","references":["https://osv.dev/vulnerability/GHSA-8hv8-536x-4wqp","https://github.com/withastro/astro/security/advisories/GHSA-8hv8-536x-4wqp","https://nvd.nist.gov/vuln/detail/CVE-2026-50146","https://github.com/withastro/astro"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-8hv8-536x-4wqp","url":"https://osv.dev/vulnerability/GHSA-8hv8-536x-4wqp"}],"summary":"Astro: Reflected XSS via unescaped slot name"}