{"id":"CVE-2025-66202","revision":"3c78b0a4a5e643718bb7d5fc5f2ae3b8","records":[{"revision":"3c78b0a4a5e643718bb7d5fc5f2ae3b8","observedAt":"2026-10-25T03:17:36.152+00:00","statement":{"source":"nvd","id":"CVE-2025-66202","aliases":[],"title":"Astro is a web framework. Versions 5.15.7 and below have a double URL encoding bypass which allows any unauthenticated attacker to bypass path-based authentication checks in Astro middleware, granting unauthorized access to protected routes…","description":"Astro is a web framework. Versions 5.15.7 and below have a double URL encoding bypass which allows any unauthenticated attacker to bypass path-based authentication checks in Astro middleware, granting unauthorized access to protected routes. While the original CVE-2025-64765 was fixed in v5.15.8, the fix is insufficient as it only decodes once. By using double-encoded URLs, attackers can still bypass authentication and access any route protected by middleware pathname checks. This issue is fixed in version 5.15.8.","state":0,"publishedAt":"2025-12-09T00:15:48.977+00:00","modifiedAt":"2026-10-07T20:10:01.97+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/withastro/astro/commit/6f800813516b07bbe12c666a92937525fddb58ce","https://github.com/withastro/astro/security/advisories/GHSA-ggxq-hp9w-j794","https://github.com/withastro/astro/security/advisories/GHSA-whqg-ppgf-wp8c"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-66202","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-647"],"productCriteria":["cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2025-12-09T00:15:48.977","lastModified":"2026-10-07T20:10:01.970"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2025-66202","identifiers":["CVE-2025-66202"]},"retained":false,"historicalAffected":[]}],"coverage":[]}