CVE-2026-33769 — Astro: Remote allowlist bypass via unanchored matchPathname wildcard
Astro is a web framework. From version 2.10.10 to before version 5.18.1, this issue concerns Astro's remotePatterns path enforcement for remote URLs used by server-side fetchers…
Published: 2026-03-24 · CVSS: 2.9 · CVSS 4.0
Astro is a web framework. From version 2.10.10 to before version 5.18.1, this issue concerns Astro's remotePatterns path enforcement for remote URLs used by server-side fetchers such as the image optimization endpoint. The path matching logic for /* wildcards is unanchored, so a pathname that contains the allowed prefix later in the path can still match. As a result, an attacker can fetch paths outside the intended allowlisted prefix on an otherwise allowed host. This issue has been patched in version 5.18.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7