GHSA-529g-xq4f-cw38: @astrojs/netlify broadens Astro image.remotePatterns in Netlify Image CDN config

Summary @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. Technical details The Netlify adapter generates regex strings for Netlify Image CDN from image.remotePatterns. For *.example.com, it emits ([a-z0-9-]+\\.)?example\\.com, which makes the subdomain optional. Astro's canonical helper requires exactly one subdomain and rejects the apex host. For /ok/*, the adapter emits a segment regex but does not anchor the end of the URL. Netlify's Image CDN implementation treats images.remote_images entries as JavaScript regular expressions and calls .test(sourceImageUrl.href), so a URL such as /ok/a/b.svg matches the /ok/a prefix even though Astro's helper rejects it. The latest npm package @astrojs/netlify@7.0.10 contains this conversion logic, and a minimal Astro build writes the broadened patterns into .netlify/v1/config.json. Reproduction 1. Create an Astro app using astro@6.3.8 and @astrojs/netlify@7.0.10. 2. Configure Netlify output and a restrictive image pattern, for example remotePatterns: [{ protocol: 'http', hostname: '*.localhost', pathname: '/ok/*' }]. 3. Build the app and observe that .netlify/v1/config.json contains http://([a-z0-9-]+\\.)?localhost(:[0-9]+)?(\\/ok/[^/?#]+)/?([?][^#]*)?. 4. Serve a canary SVG on 127.0.0.1:9001. 5. Request /.netlify/images?url=http%3A%2F%2Flocalhost%3A9001%2Fok%2Fa.svg&w=100. Astro's helper rejects the apex localhost for *.localhost, but Netlify Image CDN accepts it and fetches the canary. 6. As a negative control, request /.netlify/images?url=http%3A%2F%2Flocalhost%3A9001%2Fnope%2Fa.svg&w=100. This returns 403 Forbidden: Remote image URL not allowed and does not hit the canar