CVE-2026-27829
CVE-2026-27829 · Astro is vulnerable to SSRF due to missing allowlist enforcement in remote image inferSize
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Astro is a web framework. In versions 9.0.0 through 9.5.3, a bug in Astro's image pipeline allows bypassing `image.domains` / `image.remotePatterns` restrictions, enabling the server to fetch content from unauthorized remote hosts. Astro provides an `inferSize` option that fetches remote images at render time to determine their dimensions. Remote image fetches are intended to be restricted to domains the site developer has manually authorized (using the `image.domains` or `image.remotePatterns` options). However, when `inferSize` is used, no domain validation is performed — the image is fetched from any host regardless of the configured restrictions. An attacker who can influence the image URL (e.g., via CMS content or user-supplied data) can cause the server to fetch from arbitrary hosts. This allows bypassing `image.domains` / `image.remotePatterns` restrictions to make server-side requests to unauthorized hosts. This includes the risk of server-side request forgery (SSRF) against internal network services and cloud metadata endpoints. Version 9.5.4 fixes the issue.
CVSS 6.5 · Moyenne · EPSS 0,3% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
astro
- Versions du logiciel
- >= 9.0.0, < 9.5.4: Concernée
Aucun correctif publié
@astrojs/node npm
- Plages de versions concernées
- SEMVER: ≥ 9.0.0, < 9.5.4
Mettez à jour vers 9.5.4