{"action":"Upgrade astro to 6.4.6 or later.","affected":[{"fixed":"6.4.6","introduced":"0"}],"component":"astro","cve_ids":["CVE-2026-54299"],"ecosystem":"npm","epss":0.00333,"exploited":false,"fixed_versions":["6.4.6"],"ghsa_id":"GHSA-2pvr-wf23-7pc7","id":"tcs_01M5KETSD4MV0N7DBH64Z0BCV4","modified_at":"2026-08-12T20:45:07.787678102Z","published_at":"2026-06-16T14:38:06Z","references":["https://osv.dev/vulnerability/GHSA-2pvr-wf23-7pc7","https://github.com/withastro/astro/security/advisories/GHSA-2pvr-wf23-7pc7","https://nvd.nist.gov/vuln/detail/CVE-2026-54299","https://github.com/withastro/astro"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-2pvr-wf23-7pc7","url":"https://osv.dev/vulnerability/GHSA-2pvr-wf23-7pc7"}],"summary":"Astro: Host header SSRF in prerendered error page fetch"}