{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-84376","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-09-01T16:27:58.129Z","datePublished":"2026-09-02T16:24:23.799Z","dateUpdated":"2026-09-04T02:44:22.828Z"},"containers":{"cna":{"title":"Astro: Authorization bypass from missing path-segment boundary check when stripping the configured base","problemTypes":[{"descriptions":[{"cweId":"CWE-187","lang":"en","description":"CWE-187: Partial String Comparison","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/withastro/astro/security/advisories/GHSA-376h-93r7-7g6f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/withastro/astro/security/advisories/GHSA-376h-93r7-7g6f"},{"name":"https://github.com/withastro/astro/pull/17701","tags":["x_refsource_MISC"],"url":"https://github.com/withastro/astro/pull/17701"},{"name":"https://github.com/withastro/astro/commit/05763a0884aabb1da78a2749d5bb9d41ae620527","tags":["x_refsource_MISC"],"url":"https://github.com/withastro/astro/commit/05763a0884aabb1da78a2749d5bb9d41ae620527"},{"name":"https://github.com/withastro/astro/releases/tag/astro@7.2.4","tags":["x_refsource_MISC"],"url":"https://github.com/withastro/astro/releases/tag/astro@7.2.4"}],"affected":[{"vendor":"withastro","product":"astro","versions":[{"version":"< 7.2.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-02T16:24:23.799Z"},"descriptions":[{"lang":"en","value":"Astro is a web framework for content-driven websites. Prior to 7.2.4, Astro stripped a configured non-root base path from request pathnames using a string-prefix check without verifying a path-segment boundary. With base \"/app\", a request to \"/appX/admin\" resolved internally to the protected \"/admin\" route while middleware observed \"/appX/admin\" in context.url.pathname. In applications that authorize base-prefixed routes by inspecting context.url.pathname, an unauthenticated remote attacker could bypass pathname-based middleware authorization and reach protected routes. This issue is fixed in version 7.2.4."}],"source":{"advisory":"GHSA-376h-93r7-7g6f","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-04T02:44:13.248897Z","id":"CVE-2026-84376","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-04T02:44:22.828Z"}}]}}