{"id":"CVE-2026-102984","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102984","generatedAt":"2026-10-28T01:01:20.868Z","title":"The issue affects availability only and does not expose data or permit code execution.","description":"Astro is a web framework for content-driven websites. Prior to 11.1.3, the @astrojs/node adapter builds a request URL from the Host header, and a malformed port can make that URL invalid. The recovery path reuses the same malformed host and throws an uncaught TypeError: Invalid URL before routing begins. In the default standalone configuration, the request returns an HTTP 500 response and the server continues running, but when staticHeaders is enabled the synchronous handler does not catch the exception and the Node process terminates. Proxies and CDNs that reject malformed Host headers prevent this path from reaching the origin. The issue affects availability only and does not expose data or permit code execution. This issue is fixed in version 11.1.3.","published":"2026-09-30T15:22:23.000Z","lastModified":"2026-09-30T20:17:26.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":8.2,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-248"],"affected":[],"epss":{"score":0.00362,"percentile":0.29823,"date":"2026-10-26","history":[{"date":"2026-10-01","score":0.0063,"percentile":0.48247}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-30T15:22:23.000Z","detail":{"score":"8.2","severity":"HIGH","publishedAt":"2026-09-30T15:22:23.490Z"},"summary":"New CVE, high severity (CVSS 8.2)."}],"references":[{"url":"https://github.com/withastro/astro/commit/2066f39c60707a100531b4ef4bb5dab8feafa7f2","source":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/pull/17572","source":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/releases/tag/@astrojs/node@11.1.3","source":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/security/advisories/GHSA-qh8j-hqjv-7m4x","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102984","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}