6.5

CVE-2025-66202

Astro has an Authentication Bypass via Double URL Encoding, a bypass for CVE-2025-64765

Astro is a web framework. Versions 5.15.7 and below have a double URL encoding bypass which allows any unauthenticated attacker to bypass path-based authentication checks in Astro middleware, granting unauthorized access to protected routes. While the original CVE-2025-64765 was fixed in v5.15.8, the fix is insufficient as it only decodes once. By using double-encoded URLs, attackers can still bypass authentication and access any route protected by middleware pathname checks. This issue is fixed in version 5.15.8.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Astro ≫ Astro SwPlatformnode.js Version < 5.15.8
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.189
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.5 3.9 2.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
security-advisories@github.com 6.5 3.9 2.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-647 Use of Non-Canonical URL Paths for Authorization Decisions

The product defines policy namespaces and makes authorization decisions based on the assumption that a URL is canonical. This can allow a non-canonical URL to bypass the authorization.

https://github.com/withastro/astro/security/advisories/GHSA-ggxq-hp9w-j794
Not Applicable
https://github.com/withastro/astro/commit/6f800813516b07bbe12c666a92937525fddb58ce
Patch
https://github.com/withastro/astro/security/advisories/GHSA-whqg-ppgf-wp8c
Vendor Advisory