{"action":"Upgrade svelte to 5.51.5 or later.","affected":[{"fixed":"5.51.5","introduced":"0"}],"component":"svelte","cve_ids":["CVE-2026-27122"],"ecosystem":"npm","epss":0.0022,"exploited":false,"fixed_versions":["5.51.5"],"ghsa_id":"GHSA-m56q-vw4c-c2cp","id":"tcs_01M5KFZM25PEV6VXGWET6FXYAH","modified_at":"2026-09-10T03:50:35.273929194Z","published_at":"2026-02-19T15:18:42Z","references":["https://osv.dev/vulnerability/GHSA-m56q-vw4c-c2cp","https://github.com/sveltejs/svelte/security/advisories/GHSA-m56q-vw4c-c2cp","https://nvd.nist.gov/vuln/detail/CVE-2026-27122","https://github.com/sveltejs/svelte"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-m56q-vw4c-c2cp","url":"https://osv.dev/vulnerability/GHSA-m56q-vw4c-c2cp"},{"source":"nvd","source_id":"CVE-2026-27122","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27122"}],"summary":"Svelte SSR does not validate dynamic element tag names in `<svelte:element>`"}