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CVE-2026-33769— Astro: Remote allowlist bypass via unanchored matchPathname wildcard

EPSS 0.04% · P13
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I. Basic Information for CVE-2026-33769

Vulnerability Information
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Vulnerability Title
Astro: Remote allowlist bypass via unanchored matchPathname wildcard
Source: NVD (National Vulnerability Database)
Vulnerability Description
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Astro 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Astro是Astro开源的一个内容驱动网站的 web 框架。 Astro 2.10.10至5.18.1之前版本存在输入验证错误漏洞，该漏洞源于remotePatterns路径匹配逻辑存在缺陷，可能导致获取超出允许前缀的路径。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
withastroastro >= 2.10.10, < 5.18.1 -

II. Public POCs for CVE-2026-33769

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III. Intelligence Information for CVE-2026-33769

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Same Patch Batch · withastro · 2026-03-24 · 3 CVEs total

CVE-2026-337686.5 MEDIUMAstro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`
CVE-2026-297725.9 MEDIUMAstro: Memory exhaustion DoS due to missing request body size limit in Server Islands

IV. Related Vulnerabilities

Same product: astro
Same vendor: withastro
Same weakness: CWE-20

V. Comments for CVE-2026-33769

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