{"action":"Upgrade svelte to 5.55.7 or later.","affected":[{"fixed":"5.55.7","introduced":"5.51.5"}],"component":"svelte","cve_ids":["CVE-2026-42567"],"ecosystem":"npm","epss":0.00451,"exploited":false,"fixed_versions":["5.55.7"],"ghsa_id":"GHSA-9rmh-mm8f-r9h6","id":"tcs_01M5KFGXGWRH4MT2K088MMR8H9","modified_at":"2026-06-09T18:45:23.337407449Z","published_at":"2026-05-14T20:29:05Z","references":["https://osv.dev/vulnerability/GHSA-9rmh-mm8f-r9h6","https://github.com/sveltejs/svelte/security/advisories/GHSA-9rmh-mm8f-r9h6","https://nvd.nist.gov/vuln/detail/CVE-2026-42567","https://github.com/sveltejs/svelte","https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-9rmh-mm8f-r9h6","url":"https://osv.dev/vulnerability/GHSA-9rmh-mm8f-r9h6"}],"summary":"Svelte: ReDoS in `<svelte:element>` Tag Validation"}