withastro up to 7.0.12 CDN Image server-side request forgery

Summaryinfo

A vulnerability identified as critical has been detected in withastro astro up to 7.0.12. This affects an unknown part of the component CDN Image Handler. Performing a manipulation results in server-side request forgery. This vulnerability is cataloged as CVE-2026-54300. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in withastro astro up to 7.0.12. It has been classified as critical. This affects some unknown functionality of the component CDN Image Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

@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 semantics than Astro's canonical matcher. A single wildcard hostname such as *.example.com is converted to an optional subdomain regex, so the apex host matches. A single wildcard pathname such as /ok/* is converted without end anchoring, so deeper paths match by prefix. This vulnerability is fixed in 7.0.13.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-54300 since 06/12/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 7.0.13 eliminates this vulnerability.

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Productinfo

Vendor

• withastro

Name

• astro

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12

Website

• Product: https://github.com/withastro/astro/

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