CVE-2026-59730

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.

CVSS

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

27 Jul 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-27 21:17

Updated : 2026-07-28 16:17

NVD link : CVE-2026-59730

Mitre link : CVE-2026-59730

CVE.ORG link : CVE-2026-59730

JSON object : View

Products Affected

No product.

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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