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Preconditions for exploitation: trailingSlash: 'always' must be set (non-default; the default is 'ignore'), the request path must not have a file extension in its final segment, and an attacker must deliver the crafted link to a user. This issue has been fixed in version 11.0.2.","state":0,"publishedAt":"2026-07-27T20:00:28.662+00:00","modifiedAt":"2026-07-28T13:49:13.73+00:00","affected":[{"ecosystem":"Vendor product","name":"astro","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"withastro\",\n                    \"product\": \"astro\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 8.1.0, < 11.0.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","score":2.1,"severity":"LOW"}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-r557-wffq-wvrc","https://github.com/withastro/astro/pull/17252","https://github.com/withastro/astro/commit/eb6f97e391ee587747e37609c255c7cd4b9cce3c","https://github.com/withastro/astro/releases/tag/@astrojs/node@11.0.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-59730","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-59730","identifiers":["CVE-2026-59730"]},"retained":false,"historicalAffected":[]},{"revision":"1f90d685a21d48518cb725535d1aa968","observedAt":"2026-10-25T14:19:22.811+00:00","statement":{"source":"nvd","id":"CVE-2026-59730","aliases":[],"title":"Astro is a web framework for content-driven websites. In versions 8.1.0 through 11.0.1, when trailingSlash: 'always' is configured, the @astrojs/node standalone server's static file handler appends a trailing slash to request paths and issu…","description":"Astro is a web framework for content-driven websites. In versions 8.1.0 through 11.0.1, when trailingSlash: 'always' is configured, the @astrojs/node standalone server's static file handler appends a trailing slash to request paths and issues a 301 redirect. Paths beginning with /\\ (slash-backslash) were not recognized as internal paths, so the handler would echo the raw path back in the Location header. Because browsers treat \\ as / per the WHATWG URL specification, the resulting redirect could resolve to an external host. Preconditions for exploitation: trailingSlash: 'always' must be set (non-default; the default is 'ignore'), the request path must not have a file extension in its final segment, and an attacker must deliver the crafted link to a user. This issue has been fixed in version 11.0.2.","state":0,"publishedAt":"2026-07-27T21:17:05.843+00:00","modifiedAt":"2026-10-24T13:10:00.147+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":2.1,"severity":"LOW"}],"references":["https://github.com/withastro/astro/commit/eb6f97e391ee587747e37609c255c7cd4b9cce3c","https://github.com/withastro/astro/pull/17252","https://github.com/withastro/astro/releases/tag/@astrojs/node@11.0.2","https://github.com/withastro/astro/security/advisories/GHSA-r557-wffq-wvrc"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59730","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-601"],"productCriteria":[],"sourceDates":{"published":"2026-07-27T21:17:05.843","lastModified":"2026-10-24T13:10:00.147"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. 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Because browsers treat `\\` as `/` per the WHATWG URL specification, the resulting redirect could resolve to an external host.\n\n**Preconditions:**\n- `trailingSlash: 'always'` must be set (non-default; the default is `'ignore'`)\n- The request path must not have a file extension in its final segment\n- An attacker must deliver the crafted link to a user\n\n### Patches\n\nFixed by treating backslash-prefixed paths the same as `//`-prefixed paths in `isInternalPath()`, so they are no longer rewritten with a trailing slash.\n\n### Workarounds\n\nUse the default `trailingSlash: 'ignore'` setting, which does not issue trailing-slash redirects in the static file handler.\n\n### References\n\n- [WHATWG URL spec: backslash normalization](https://url.spec.whatwg.org/#url-parsing)","state":0,"publishedAt":"2026-07-20T23:22:22+00:00","modifiedAt":"2026-08-12T20:45:07.7913929+00:00","affected":[{"ecosystem":"npm","name":"@astrojs/node","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"8.1.0"},{"kind":"fixed","version":"11.0.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-r557-wffq-wvrc","https://nvd.nist.gov/vuln/detail/CVE-2026-59730","https://github.com/withastro/astro/pull/17252","https://github.com/withastro/astro/commit/eb6f97e391ee587747e37609c255c7cd4b9cce3c","https://github.com/withastro/astro","https://github.com/withastro/astro/releases/tag/@astrojs/node@11.0.2"],"sourceUrl":"https://github.com/advisories/GHSA-r557-wffq-wvrc","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-r557-wffq-wvrc","identifiers":["GHSA-r557-wffq-wvrc","CVE-2026-59730"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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