@astrojs/netlify broadens Astro image.remotePatterns in Netlify Image CDN config

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-54300: 0.31% estimated exploitation activity in the next 30 days; percentile 24.24 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary @astrojs/netlify converts Astro image.remotePatterns into Netlify Image CDN images.remoteimages 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.remoteimages 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…

Published by the source

16 Jun 2026, 14:37 UTC

Last modified by the source

18 Jul 2026, 17:30 UTC

Source last checked

26 Oct 2026, 12:57 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-529g-xq4f-cw38

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-529g-xq4f-cw38

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# Patch Next advisory brief: CVE-2026-54300

Advisory: @astrojs/netlify broadens Astro image.remotePatterns in Netlify Image CDN config
IDs: CVE-2026-54300, GHSA-529g-xq4f-cw38
Record: https://patchnext.com/advisories/cve-2026-54300 (revision 2, source checked 26 Oct 2026, 12:57 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @astrojs/netlify 7.0.13. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @astrojs/netlify: affected < 7.0.13; fixed in 7.0.13

## Suggested inspection (read-only)
- `npm ls @astrojs/netlify --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @astrojs/netlify.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-529g-xq4f-cw38 (OSV record GHSA-529g-xq4f-cw38 lists affected ranges: npm @astrojs/netlify >=0 <7.0.13 (fixed))
- Verified: https://github.com/advisories/GHSA-529g-xq4f-cw38 (GitHub-reviewed advisory GHSA-529g-xq4f-cw38 lists affected ranges: npm @astrojs/netlify >=0 <7.0.13)

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