CVE-2026-54299 Astro: Host-header full-read SSRF in core prerendered error-page fetch (prerenderedErrorPageFetch default + unvalidated createRequestFromNodeRequest URL)

Astro is a web framework. Prior to 6.4.6, Astro SSR apps with prerendered error pages /404 or /500 using export const prerender = true fetch those pages over HTTP at runtime when an error occurs. The URL for this fetch is derived from request.url, which in turn gets its origin from the incoming...

NPM: Astro: Host header SSRF in prerendered error page fetch

NPM: Astro: Host header SSRF in prerendered error page fetch vulnerability discovered by ? in WordPress Npm astro versions 6.4.6...

Server-side Request Forgery (SSRF)

Overview astro is an Astro is a modern site builder with web best practices, performance, and DX front-of-mind. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the prerenderedErrorPageFetch. An attacker can access sensitive information or interact with...

PT-2026-49740

Name of the Vulnerable Software and Affected Versions Astro versions prior to 6.4.6 Description Astro SSR applications using prerendered error pages, such as '/404' or '/500' with export const prerender = true, fetch these pages over HTTP at runtime during an error. The fetch URL is derived from...

CVE-2026-25545

Astro is a web framework. Prior to version 9.5.4, Server-Side Rendered pages that return an error with a prerendered custom error page eg. 404.astro or 500.astro are vulnerable to SSRF. If the Host: header is changed to an attacker's server, it will be fetched on /500.html and they can redirect...

CVE-2026-25545

Astro is a web framework. Prior to version 9.5.4, Server-Side Rendered pages that return an error with a prerendered custom error page eg. 404.astro or 500.astro are vulnerable to SSRF. If the Host: header is changed to an attacker's server, it will be fetched on /500.html and they can redirect...

CVE-2026-25545 Astro has Full-Read SSRF in error rendering via Host: header injection

Astro is a web framework. Prior to version 9.5.4, Server-Side Rendered pages that return an error with a prerendered custom error page eg. 404.astro or 500.astro are vulnerable to SSRF. If the Host: header is changed to an attacker's server, it will be fetched on /500.html and they can redirect...

GHSA-QQ67-MVV5-FW3G Astro has Full-Read SSRF in error rendering via Host: header injection

Summary Server-Side Rendered pages that return an error with a prerendered custom error page eg. 404.astro or 500.astro are vulnerable to SSRF. If the Host: header is changed to an attacker's server, it will be fetched on /500.html and they can redirect this to any internal URL to read the respon...

Server-side Request Forgery (SSRF)

Overview astro is an Astro is a modern site builder with web best practices, performance, and DX front-of-mind. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in renderError, when custom prerendered error pages like 404.astro or 500.astro are in use. The...

Astro has Full-Read SSRF in error rendering via Host: header injection

Summary Server-Side Rendered pages that return an error with a prerendered custom error page eg. 404.astro or 500.astro are vulnerable to SSRF. If the Host: header is changed to an attacker's server, it will be fetched on /500.html and they can redirect this to any internal URL to read the respon...