CVE-2026-29772

Astro Server Islands vulnerability CVE-2026-29772 affects Astro SSR apps using the Node standalone adapter prior to version 10.0.0. The POST handler buffers the entire request body and parses it as JSON without any size limit, causing JSON.parse() to allocate many V8 objects and produce memory am...

Astro input validation error vulnerability

Astro is a content-driven website framework developed by Astro OpenSource. Versions of Astro from 2.10.10 to 5.18.1 had a vulnerability related to input validation errors. This vulnerability stemmed from defects in the path matching logic of remotePatterns, which could allow access to paths that...

PT-2026-27479

Name of the Vulnerable Software and Affected Versions Astro versions prior to 10.0.0 Description Astro's Server Islands POST handler does not enforce a size limit when buffering and parsing JSON request bodies. The JSON.parse function allocates a V8 heap object for each element in the input,...

Astro security vulnerabilities

Astro is a content-driven website framework developed by Astro OpenSource. Versions of Astro prior to 10.0.0 contained security vulnerabilities. These vulnerabilities stemmed from the Server Islands POST processor, which unlimitedly buffered and parsed the entire request body as JSON, potentially...

PT-2026-27488

Name of the Vulnerable Software and Affected Versions Astro versions 2.10.10 through 5.18.0 Description Astro’s remotePatterns path enforcement for remote URLs used by server-side fetchers, such as the image optimization endpoint, is affected by an issue. The path matching logic for / wildcards i...

Astro security vulnerabilities

Astro is a content-driven website framework developed by Astro OpenSource. Versions of Astro prior to 10.0.2 contained security vulnerabilities. These vulnerabilities stemmed from the lack of authentication when reading the x-astro-path header and the xastropath query parameters, which could lead...

CVE-2026-27829

Astro is a web framework. In versions 9.0.0 through 9.5.3, a bug in Astro's image pipeline allows bypassing image.domains / image.remotePatterns restrictions, enabling the server to fetch content from unauthorized remote hosts. Astro provides an inferSize option that fetches remote images at rend...

CVE-2026-27829

Astro versions 9.0.0–9.5.3 contain a bug in the image pipeline where inferSize fetches remote images at render time without validating domains, allowing SSRF by fetching from arbitrary hosts despite image.domains/image.remotePatterns restrictions. An attacker who can influence the image URL (e.g....

CVE-2026-27829

Astro is a web framework. In versions 9.0.0 through 9.5.3, a bug in Astro's image pipeline allows bypassing image.domains / image.remotePatterns restrictions, enabling the server to fetch content from unauthorized remote hosts. Astro provides an inferSize option that fetches remote images at rend...

CVE-2026-27829 Astro is vulnerable to SSRF due to missing allowlist enforcement in remote image inferSize

Astro is a web framework. In versions 9.0.0 through 9.5.3, a bug in Astro's image pipeline allows bypassing image.domains / image.remotePatterns restrictions, enabling the server to fetch content from unauthorized remote hosts. Astro provides an inferSize option that fetches remote images at rend...

Astro code issues and vulnerabilities

Astro is a content-driven website framework developed by Astro OpenSource. Versions 9.0.0 to 9.5.3 of Astro have code vulnerabilities. These vulnerabilities stem from an issue where the image pipeline bypasses domain name restrictions, potentially leading to server-side request forgeing...

EUVD-2026-7451

Astro has memory exhaustion DoS due to missing request body size limit in Server Actions...

Astro has memory exhaustion DoS due to missing request body size limit in Server Actions

Summary Astro server actions have no default request body size limit, which can lead to memory exhaustion DoS. A single large POST to a valid action endpoint can crash the server process on memory-constrained deployments. Details On-demand rendered sites built with Astro can define server actions...

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-2026-27729

Astro is a web framework. In versions 9.0.0 through 9.5.3, Astro server actions have no default request body size limit, which can lead to memory exhaustion DoS. A single large POST to a valid action endpoint can crash the server process on memory-constrained deployments. On-demand rendered sites...

CVE-2026-27729 Astro has memory exhaustion DoS due to missing request body size limit in Server Actions

Astro is a web framework. In versions 9.0.0 through 9.5.3, Astro server actions have no default request body size limit, which can lead to memory exhaustion DoS. A single large POST to a valid action endpoint can crash the server process on memory-constrained deployments. On-demand rendered sites...

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...

EUVD-2026-7455

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...