Astro has an Authentication Bypass via Double URL Encoding, a bypass for CVE-2025-64765
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| withastro | astro | affected |
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Withastro | Astro | — |
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-whqg-ppgf-wp8c | Astro has an Authentication Bypass via Double URL Encoding, a bypass for CVE-2025-64765 |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.333% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Astro
Astro astro |
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| CPEs | cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Astro
Astro astro |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Withastro
Withastro astro |
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| Vendors & Products |
Withastro
Withastro astro |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Astro has an Authentication Bypass via Double URL Encoding, a bypass for CVE-2025-64765 | |
| Weaknesses | CWE-647 | |
| References |
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| Metrics |
cvssV3_1
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