CVE-2026-102983

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 evaluates these expressions with RegExp.test(), an allowed origin appearing only in a source URL's path or query can satisfy image.domains or image.remotePatterns while the URL's actual host remains attacker-controlled. An unauthenticated request to the public /.netlify/images endpoint can therefore cause the Image CDN to request attacker-selected URLs and may probe or reach internal services. Netlify egress protections may constrain reachable targets, and image transformation limits direct response exfiltration; no confidentiality or integrity impact has been demonstrated. This issue is fixed in version 8.2.4.

• CWE-625
• CWE-918

• https://github.com/withastro/astro/commit/e362d4cf540b27730482455c8fc02efe57d16702
• https://github.com/withastro/astro/pull/17752
• https://github.com/withastro/astro/releases/tag/@astrojs/netlify@8.2.4
• https://github.com/withastro/astro/security/advisories/GHSA-4233-jc72-56c5

Published

Sep 30, 2026

Last Modified

Sep 30, 2026

Status

Awaiting Analysis

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