Astro - Unauthorized Third-Party Image Access

Astro 5.13.2 and 4.16.18 contains an information disclosure vulnerability caused by improper validation of protocol-relative URLs in the image optimization endpoint, letting attackers serve images from unauthorized third-party domains, exploit requires on-demand rendering deployment. id:...

Astro SSR - Server-Side Request Forgery

Astro before 5.17.3 and @astrojs/node before 9.5.4 are vulnerable to full-read SSRF due to improper Host header validation in error page rendering, allowing attackers to redirect requests and access internal resources. id: CVE-2026-25545 info: name: Astro SSR - Server-Side Request Forgery author:...

Astro Cloudflare Adapter - Server Side Request Forgery

Astro is a web framework for content-driven websites. Versions 11.0.3 through 12.6.5 are vulnerable to SSRF when using Astro's Cloudflare adapter. When configured with output: 'server' while using the default imageService: 'compile', the generated image optimization endpoint doesn't check the URL...

Astro - Information Disclosure

Astro versions v5.0.3 through v5.0.7 and Astro v4.16.17 or older with sourcemaps enabled contain a source code disclosure caused by sourcemap files being publicly accessible in the build output folder, letting unauthenticated users read server source code, exploit requires sourcemaps to be enable...

Astro SSR - Open Redirect

Astro 5.2.0 through 5.12.7 contains an open redirect caused by improper handling of paths with double slashes in trailing slash redirection logic, letting attackers redirect users to arbitrary external domains, exploit requires on-demand SSR with Node or Cloudflare adapters. id: CVE-2025-54793...

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-backslas...

CVE-2026-59728

Astro is a web framework for content-driven websites. In versions 1.0.0 through 4.0.18, the source.title and enclosure.type item fields in packages/astro-rss/src/index.ts are interpolated directly into XML template strings without XML-character escaping before being parsed by fast-xml-parser. Bot...

CVE-2026-59729

Astro is a web framework for content-driven websites. Versions prior to 7.0.6 are vulnerable to XSS through unescaped spread attribute names in renderHTMLElement. The fix for CVE-2026-54298 GHSA-jrpj-wcv7-9fh9 added an INVALIDATTRNAMECHAR guard to addAttribute so that spread-prop attribute names...

CVE-2026-59727

Astro is a web framework for content-driven websites. In versions 3.10.0 through 7.0.3, when a transition:persist, transition:scope, or transition:persist-props directive is applied to a client-hydrated client: component, Astro copied the directive value onto the rendered element without...

CVE-2026-59730

CVE-2026-59730 affects the Astro ecosystem via the @astrojs/node standalone server. In versions 8.1.0–11.0.1, with trailingSlash: 'always', the static file handler could mishandle paths starting with a backslash (/), echoing the raw path in the Location header of a 301 redirect. Because browsers ...

EUVD-2026-49586

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-backslas...

CVE-2026-59728

CVE-2026-59728 (astrojs/rss) affects Astro versions 1.0.0–4.0.18 where source.title and enclosure.type are interpolated into XML without escaping in packages/astro-rss/src/index.ts, then parsed by fast-xml-parser. This allows an attacker-controlled value to inject arbitrary XML into the generated...

EUVD-2026-49584

Astro is a web framework for content-driven websites. In versions 1.0.0 through 4.0.18, the source.title and enclosure.type item fields in packages/astro-rss/src/index.ts are interpolated directly into XML template strings without XML-character escaping before being parsed by fast-xml-parser. Bot...

CVE-2026-59728 @astrojs/rss: XML Injection via Unescaped RSS Feed Fields

Astro is a web framework for content-driven websites. In versions 1.0.0 through 4.0.18, the source.title and enclosure.type item fields in packages/astro-rss/src/index.ts are interpolated directly into XML template strings without XML-character escaping before being parsed by fast-xml-parser. Bot...

CVE-2026-59727 Astro: Cross-site scripting via unescaped transition:* directive values on hydrated islands

Astro is a web framework for content-driven websites. In versions 3.10.0 through 7.0.3, when a transition:persist, transition:scope, or transition:persist-props directive is applied to a client-hydrated client: component, Astro copied the directive value onto the rendered element without...

CVE-2026-59727 Astro: Cross-site scripting via unescaped transition:* directive values on hydrated islands

Astro is a web framework for content-driven websites. In versions 3.10.0 through 7.0.3, when a transition:persist, transition:scope, or transition:persist-props directive is applied to a client-hydrated client: component, Astro copied the directive value onto the rendered element without...

CVE-2026-59727

CVE-2026-59727 (Astro): In versions 3.10.0–7.0.3, unescaped values copied from transition:persist, transition:scope, or transition:persist-props into the rendered element enable reflected XSS if an attacker-controlled input is reflected into these directives. The issue arises when untrusted inpu...

CVE-2026-59729 Astro: XSS via unescaped spread attribute names in renderHTMLElement (incomplete fix for CVE-2026-54298)

Astro is a web framework for content-driven websites. Versions prior to 7.0.6 are vulnerable to XSS through unescaped spread attribute names in renderHTMLElement. The fix for CVE-2026-54298 GHSA-jrpj-wcv7-9fh9 added an INVALIDATTRNAMECHAR guard to addAttribute so that spread-prop attribute names...

EUVD-2026-49580

Astro is a web framework for content-driven websites. Versions prior to 7.0.6 are vulnerable to XSS through unescaped spread attribute names in renderHTMLElement. The fix for CVE-2026-54298 GHSA-jrpj-wcv7-9fh9 added an INVALIDATTRNAMECHAR guard to addAttribute so that spread-prop attribute names...

CVE-2026-59729

CVE-2026-59729 affects Astro versions prior to 7.0.6, where unescaped spread attribute names in renderHTMLElement can lead to XSS in SSR when rendering a native HTMLElement-subclass component. The root cause is an inline attribute loop in renderHTMLElement that interpolates attribute names withou...