GHSA-GGXQ-HP9W-J794 Astro's middleware authentication checks based on url.pathname can be bypassed via url encoded values

A mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI to determine which route to render, while the middleware uses context.url.pathname without applying the...

EUVD-2025-198183

Astro's middleware authentication checks based on url.pathname can be bypassed via url encoded values...

Cross-site Scripting (XSS)

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 Cross-site Scripting XSS via the /server-islands/name endpoint when handling the e, s and p parameters. An attacker can execute...

Astro vulnerable to reflected XSS via the server islands feature

Summary After some research it appears that it is possible to obtain a reflected XSS when the server islands feature is used in the targeted application, regardless of what was intended by the component templates. Details Server islands run in their own isolated context outside of the page reques...

EUVD-2025-198184

Astro vulnerable to reflected XSS via the server islands feature...

@1771technologies/oneplay (>=0.0.1, <=0.0.6), @antonyfaris/prefix-node-builtins (>=1.0.0, <=1.0.1) +35 more potentially affected by CVE-2025-64764 via astro (>=5.0.0-beta.5, <=5.15.6)

astro NPM version =5.0.0-beta.5, =0.0.1, =1.0.0, =0.5.0, =1.0.0, =0.0.1, =0.1.0, =0.0.1, =2.18.7, =1.25.426-4, =0.6.2, =0.1.2-alpha.1, =0.0.28, =0.0.40 and more Source cves: CVE-2025-64764 Source advisory: SNYK:JS-ASTRO-14059122...

GHSA-WRWG-2HG8-V723 Astro vulnerable to reflected XSS via the server islands feature

Summary After some research it appears that it is possible to obtain a reflected XSS when the server islands feature is used in the targeted application, regardless of what was intended by the component templates. Details Server islands run in their own isolated context outside of the page reques...

@1771technologies/oneplay (>=0.0.1, <=0.0.6), @antonyfaris/prefix-node-builtins (>=1.0.0, <=1.0.1) +35 more potentially affected by CVE-2025-64764 via astro (>=5.0.0-beta.5, <=5.15.6)

astro NPM version =5.0.0-beta.5, =0.0.1, =1.0.0, =0.5.0, =1.0.0, =0.0.1, =0.1.0, =0.0.1, =2.18.7, =1.25.426-4, =0.6.2, =0.1.2-alpha.1, =0.0.28, =0.0.40 and more Source cves: CVE-2025-64764 Source advisory: OSV:GHSA-WRWG-2HG8-V723...

Relative Path Traversal

Overview @astrojs/internal-helpers is an Internal helpers used by core Astro packages. Affected versions of this package are vulnerable to Relative Path Traversal via the href parameter in the image optimization endpoint during development mode. An attacker can access arbitrary local image files...

Astro Development Server has Arbitrary Local File Read

Summary A vulnerability has been identified in the Astro framework's development server that allows arbitrary local file read access through the image optimization endpoint. The vulnerability affects Astro development environments and allows remote attackers to read any image file accessible to t...

GHSA-X3H8-62X9-952G Astro Development Server has Arbitrary Local File Read

Summary A vulnerability has been identified in the Astro framework's development server that allows arbitrary local file read access through the image optimization endpoint. The vulnerability affects Astro development environments and allows remote attackers to read any image file accessible to t...

Relative Path Traversal

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 Relative Path Traversal via the href parameter in the image optimization endpoint during development mode. An attacker can access...

CVE-2025-65019

Astro is a web framework. Prior to version 5.15.9, when using Astro's Cloudflare adapter @astrojs/cloudflare with output: 'server', the image optimization endpoint /image contains a critical vulnerability in the isRemoteAllowed function that unconditionally allows data: protocol URLs. This enable...

CVE-2025-64764

Astro is a web framework. Prior to version 5.15.8, a reflected XSS vulnerability is present when the server islands feature is used in the targeted application, regardless of what was intended by the component templates. This issue has been patched in version 5.15.8...

CVE-2025-64765

Astro is a web framework. Prior to version 5.15.8, a mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI to determine which route to render, while the...

CVE-2025-64757

Astro is a web framework. Prior to version 5.14.3, a vulnerability has been identified in the Astro framework's development server that allows arbitrary local file read access through the image optimization endpoint. The vulnerability affects Astro development environments and allows remote...

CVE-2025-64765 Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values

Astro is a web framework. Prior to version 5.15.8, a mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI to determine which route to render, while the...

CVE-2025-64765 Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values

Astro is a web framework. Prior to version 5.15.8, a mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI to determine which route to render, while the...

CVE-2025-64765 Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values

Astro is a web framework. Prior to version 5.15.8, a mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI to determine which route to render, while the...

CVE-2025-64765

Astro (web framework) vulnerability CVE-2025-64765 and related advisories describe a path normalization mismatch: Astro uses decodeURI for routing, while middleware reads context.url.pathname without the same normalization. This permits bypassing path-based authentication by double-encoded URLs (...