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CVE-2026-102983

CVE-2026-102983 · Astro: Netlify Image CDN allowlist bypass enables SSRF

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.3 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • astro

    Versions
    • >= 5.2.0, < 8.2.4: Affected

    No fix published

  • netlify

    Versions
    • >= 5.2.0, < 8.2.4: Affected

    No fix published

  • @astrojs/netlify npm

    Affected ranges
    • SEMVER: ≥ 5.2.0, < 8.2.4

    Update to 8.2.4

Original sources

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