PT-2026-27488 · Withastro · Astro

Christos-Eth · Published 2026-03-24 · Updated 2026-03-24 · CVE-2026-33769

NVD

CVSS v4.0

2.9

Low

AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2026-33769

Affected Products

Astro

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-33769 · Security Note
• https://github.com/withastro/astro/security/advisories/GHSA-g735-7g2w-hh3f · Note