astro at a glance
- Last 12 months
- 39
- Critical · all time
- 0
- Exploited · all time
- 0
- Public exploit · all time
- 2
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 5 | 0 |
| Oct 2026 | 2 | 0 |
| Sep 2026 | 3 | 0 |
| Aug 2026 | 4 | 0 |
| Jul 2026 | 5 | 0 |
| Jun 2026 | 4 | 0 |
| May 2026 | 1 | 0 |
| Apr 2026 | 2 | 0 |
| Mar 2026 | 3 | 0 |
| Feb 2026 | 3 | 0 |
| Jan 2026 | 0 | 0 |
| Dec 2025 | 1 | 0 |
| Nov 2025 | 6 | 0 |
| Oct 2025 | 2 | 0 |
| Sep 2025 | 1 | 0 |
| Aug 2025 | 3 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 0 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 2 | 0 |
48 results · Feed
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Medium 5.4
Astro is a web framework for content-driven websites. Prior to @astrojs/prism 4.1.2, and from @astrojs/markdoc 0.3.0 un…
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Medium 6.3
Astro: Image endpoint in @astrojs/node can read files from a case-variant sibling of the output directory on case-sensitive filesystems
Astro is a web framework for content-driven websites. From 5.14.3 until 7.4.7, Astro's /_image endpoint compared the requested local-image path with the build output directory without preserving case on case-sensitive filesystems. A sibling directory whose pa…
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Low 2.3
Astro: Reflected XSS via unescaped slot names in @astrojs/solid-js
Astro is a web framework for content-driven websites. From 0.2.0 until 7.1.2, the @astrojs/solid-js renderer inserted a named slot into the quoted name attribute of an astro-slot wrapper without HTML escaping. A request-controlled slot name containing a quote…
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Low 2.3
Astro: Reflected XSS via unescaped slot names in @astrojs/svelte
Astro is a web framework for content-driven websites. From 5.7.3 until 9.1.2, the @astrojs/svelte renderer inserted a named slot into the quoted name attribute of an astro-slot wrapper without HTML escaping. Request-controlled slot names containing a quote co…
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Low 2.3
Astro is a web framework for content-driven websites. Prior to 7.4.5, Astro rendered a string used as a dynamic element…
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Medium 6.5
Astro: Reflected/Stored XSS via unescaped <script>/<style> tag content in JSX/MDX rendering
Astro is a web framework for content-driven websites. Prior to 7.3.2, Astro's JSX and MDX rendering pipeline treats string children of script and style elements as trusted HTML without distinguishing compiler-generated literal content from dynamic expression …
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Low 2.3
Astro: Arbitrary CSS injection in Astro View Transitions
Astro is a web framework for content-driven websites. From 7.1.0 until 7.3.3, Astro's server-side View Transition CSS generator does not keep string animation properties within their generated declarations. An application that passes attacker-controlled data …
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High 8.2
Astro: Malformed port in the Host header can crash the Node adapter
Astro is a web framework for content-driven websites. Prior to 11.1.3, the @astrojs/node adapter builds a request URL from the Host header, and a malformed port can make that URL invalid. The recovery path reuses the same malformed host and throws an uncaught…
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Medium 6.3
Astro: Netlify Image CDN allowlist bypass enables SSRF
Astro is a web framework for content-driven websites. From 5.2.0 until 8.2.4, the @astrojs/netlify adapter generates regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Because Netlify evaluate…
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Medium 6.3
Astro: Authorization bypass from missing path-segment boundary check when stripping the configured base
Astro is a web framework for content-driven websites. Prior to 7.2.4, Astro stripped a configured non-root base path from request pathnames using a string-prefix check without verifying a path-segment boundary. With base "/app", a request to "/appX/admin" res…
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Medium 6.5
Astro: Unauthenticated path override in the @astrojs/vercel ISR function
Astro is a web framework for content-driven websites. From 10.0.3 until 11.0.3, the Astro Vercel adapter in packages/integrations/vercel/src/serverless/entrypoint.ts accepts x_astro_path for the public /_isr function based only on the x-vercel-isr header, all…
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Low 3.7
@astrojs/netlify generates an overly-broad Netlify Image CDN allowlist because remotePatterns.pathname metacharacters are not escaped
Astro is a web framework for content-driven websites. Prior to 8.1.2, the Astro Netlify adapter converts each image.remotePatterns entry into a regular expression written to .netlify/v1/config.json under images.remote_images for Netlify's Image CDN allowlist.…
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Medium 5.1
Astro: composable `astro/hono` pipeline bypasses `security.checkOrigin` when `middleware()` is absent or misordered
Astro is a web framework for content-driven websites. From 7.0.0 until 7.0.6, the composable astro/hono pipeline installs security.checkOrigin only through the middleware() primitive, while actions() and pages() can dispatch to user code independently. Mounti…
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Medium 5.3
Astro: Reflected XSS via unescaped View Transition animation properties
Astro is a web framework for content-driven websites. From 2.9.0 until 7.1.0, Astro's server-side View Transition CSS generator interpolates animation properties into an inline style element without escaping them for CSS and HTML contexts. An attacker-control…
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Low 2.1
@astrojs/node: Backslash-prefixed paths not recognized as internal by trailing-slash redirect
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. …
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Medium 4.3
@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 befor…
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Low 2.1
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 o…
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Medium 5.1
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 INVALID_ATTR_NAME_CHAR guard to addAtt…
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High 8.2
Astro 6.4.7 Authorization Bypass via Decode Iteration Limit and Rewrite Path Canonicalization Mismatch
Astro is a web framework for content-driven websites. Version 6.4.7 performs authorization decisions on a partially decoded pathname after reaching the iterative URL decoder limit, while later rewrite route matching performs an additional decodeURI() operatio…
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High 7.5
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 …
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Medium 4.2
Astro: XSS via Unescaped Attribute Names in Spread Props
Astro is a web framework. Prior to 6.4.6, the spreadAttributes function in Astro's server-side rendering pipeline iterates over object keys and passes them directly to addAttribute, which interpolates the key into the HTML output without escaping. When a deve…
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High 7.1
Astro: Reflected XSS via unescaped slot name
Astro is a web framework. Prior to 6.3.3, when a component uses a client:* directive, Astro inserts named slot content into a data-astro-template attribute without HTML escaping the slot name allowing an attacker to break out of the attribute context and inje…
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Medium 5.3
@astrojs/netlify broadens Astro image.remotePatterns in Netlify Image CDN config
@astrojs/netlify is an adapter that allows Astro to deploy your hybrid or server rendered site to Netlify. Prior to 7.0.13, @astrojs/netlify converts Astro image.remotePatterns into Netlify Image CDN images.remote_images regular expressions with broader seman…
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Low 2.9
Astro: Server island encrypted parameters vulnerable to cross-component replay
Astro is a web framework. Astro versions prior to 6.1.10 used AES-GCM encryption to protect the confidentiality and integrity of server island props and slots parameters, but did not bind the ciphertext to its intended component or parameter type. An attacker…
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Medium 5.3
@astrojs/node: Cache Poisoning due to incorrect error handling when if-match header is malformed
@astrojs/node allows Astro to deploy your SSR site to Node targets. Prior to 10.0.5, requesting a static js/css resources from _astro path with an incorrect/malformed if-match header returns a 500 error with a one year cache lifetime instead of 412 in some ca…
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Medium 6.1
Astro: XSS via incomplete `</script>` sanitization in `define:vars` allows case-insensitive and whitespace-based bypass
Astro is a web framework. Prior to 6.1.6, the defineScriptVars function in Astro's server-side rendering pipeline uses a case-sensitive regex /<\/script>/g to sanitize values injected into inline <script> tags via the define:vars directive. HTML parsers close…
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Low 2.9
Astro: Remote allowlist bypass via unanchored matchPathname wildcard
Astro is a web framework. From version 2.10.10 to before version 5.18.1, this issue concerns Astro's remotePatterns path enforcement for remote URLs used by server-side fetchers such as the image optimization endpoint. The path matching logic for /* wildcards…
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Medium 6.5
Astro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`
Astro is a web framework. Prior to version 10.0.2, the @astrojs/vercel serverless entrypoint reads the x-astro-path header and x_astro_path query parameter to rewrite the internal request path, with no authentication whatsoever. On deployments without Edge Mi…
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Medium 5.9
Astro: Memory exhaustion DoS due to missing request body size limit in Server Islands
Astro is a web framework. Prior to version 10.0.0, Astro's Server Islands POST handler buffers and parses the full request body as JSON without enforcing a size limit. Because JSON.parse() allocates a V8 heap object for every element in the input, a crafted p…
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Medium 6.5
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 `inferSiz…
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Medium 5.9
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…
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Medium 6.9CVE-2026-25545 Scanner template
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 b…
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Medium 6.5
Astro has an Authentication Bypass via Double URL Encoding, a bypass for CVE-2025-64765
Astro is a web framework. Versions 5.15.7 and below have a double URL encoding bypass which allows any unauthenticated attacker to bypass path-based authentication checks in Astro middleware, granting unauthorized access to protected routes. While the origina…
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Medium 6.9
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 …
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High 7.1CVE-2025-64764 Scanner template
Astro is vulnerable to Reflected XSS via the server islands feature
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 template(s). This issue has been patched in versi…
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Medium 5.4
Astro Cloudflare adapter has a Stored Cross Site Scripting vulnerability in /_image endpoint
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 unconditio…
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Low 3.5
Astro Development Server is Vulnerable to Arbitrary Local File Read
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 developmen…
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Low 2.7
Astro development server error page vulnerable to reflected Cross-site Scripting
Astro is a web framework. Starting in version 5.2.0 and prior to version 5.15.6, a Reflected Cross-Site Scripting (XSS) vulnerability exists in Astro's development server error pages when the `trailingSlash` configuration option is used. An attacker can injec…
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Medium 6.5CVE-2025-64525 Scanner template
Astro: URL manipulation via unsanitized headers leads to path-based middleware protections bypass, potential SSRF/cache-poisoning, CVE-2025-61925 bypass
Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers `x-forwarded-proto` and `x-forwarded-port` are insecurely used, without sanitization, to build the URL. This has several consequenc…
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High 7.2
astro allows bypass of image proxy domain validation leading to SSRF and potential XSS
Astro is a web framework that includes an image proxy. In versions 5.13.4 and later before 5.13.10, the image proxy domain validation can be bypassed by using backslashes in the href parameter, allowing server-side requests to arbitrary URLs. This can lead to…