{"id":"CVE-2026-59731","sourceIdentifier":"security-advisories@github.com","published":"2026-07-08T17:17:25.937","lastModified":"2026-07-09T16:29:14.203","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"Astro is a web framework for content-driven websites. Version 6.4.7 performs authorization decisions on a partially decoded pathname after reaching the iterative URL decoder limit, while later rewrite route matching performs an additional decodeURI() operation and can resolve the request to a protected route. This issue is fixed in version 6.4.8."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"withastro","product":"astro","versions":[{"version":">= 6.4.7, < 6.4.8","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":4.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-09T14:38:51.210895Z","id":"CVE-2026-59731","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-647"}]}],"references":[{"url":"https://github.com/withastro/astro/commit/27c80ea92248993e5fce94b2c26d87d611ab6785","source":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/pull/17109","source":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/releases/tag/astro@6.4.8","source":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/security/advisories/GHSA-vj59-8hwv-xxmv","source":"security-advisories@github.com"},{"url":"https://github.com/withastro/astro/security/advisories/GHSA-vj59-8hwv-xxmv","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}