CVE-2026-73425

@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. In packages/integrations/netlify/src/index.ts, remotePatternToRegex() escapes dots in hostname values but interpolates literal pathname values without escaping regular expression metacharacters such as ., +, ?, (, and [, so a restrictive pathname such as /img/v1.0/file also matches metacharacter-adjacent paths, including paths that cross a segment. Netlify enforces the generated regular expression directly and Astro's matchPattern() helper does not revalidate the request, allowing optimization of images on an already-allowed host that the declared pathname was intended to exclude. This issue is fixed in version 8.1.2.

We have discovered 29,694 live websites that are affected by CVE-2026-73425.

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Affected Software

Product  Astro
Category Static Site Generator
Vulnerable Domains29,694 live websites (100% of Astro install base)
Vulnerable Versions
  • from 0 through 8.1.2
Vulnerable Versions Count472 versions ( 100% of all versions)


Common Weakness Enumeration

CWE-185 Incorrect Regular Expression



Details

  • Published - Aug 12, 2026
  • Updated - Aug 13, 2026

Website Distribution by Country

Number of websites using CVE-2026-73425
United States17,386 websites


Germany1,956 websites
France1,036 websites
GB786 websites
Japan638 websites
Spain472 websites
Poland418 websites
Canada397 websites
Netherlands394 websites
Brazil366 websites

Website Distribution by TLD

Number of websites using CVE-2026-73425
.com14,249 websites
.de1,191 websites
.org1,044 websites
.net1,031 websites
.fr747 websites
.co.uk562 websites
.io470 websites
.com.br414 websites
.nl387 websites
.it354 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-73425

Top websites that are affected by CVE-2026-73425. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
**********.com United States**
*****.net Canada***
**.cn China***
************.com United States*,***
********.jp Japan*,***
*****.com United States*,***
****.**.jp Japan*,***
*******.com United States*,***
**********.**********.com United States*,***
***********.com United States*,***
See full domain list

FAQ

CVE-2026-73425 is Incorrect Regular Expression in Astro
A total of 29,694 websites have been identified as vulnerable to CVE-2026-73425, based on global website indexing conducted by WebTechSurvey.
The Astro is affected by the CVE-2026-73425 vulnerability.
Astro versions up to 8.1.2 are vulnerable to CVE-2026-73425.
CVE-2026-73425 is resolved in version 8.1.2 of Astro.