Disclosure summary
Astro is a web framework. In Astro versions 2.16.0 up to but excluding 5.15.5 which utilizeon-demand rendering, request headers `x-forwarded-proto` and `x-forwarded-port` are insecurely used, without sanitization, to build the URL. This has several consequences, the most important of which are: middleware-based protected route bypass (only via `x-forwarded-proto`), DoS via cache poisoning (if a CDN is present), SSRF (only via `x-forwarded-proto`), URL pollution (potential SXSS, if a CDN is present), and WAF bypass. Version 5.15.5 contains a patch.
Source-reported weakness categories
CWE-918
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-64525
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| astro | astro | * {"versionStartIncluding":"2.16.0","versionEndExcluding":"5.15.5"} |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Product
- github.com — Product
- github.com — Patch
- github.com — Exploit, Third Party Advisory
PUBLISHED 2025-11-13T11:15:56-05:00
MODIFIED 2026-10-07T17:10:00-04:00
INGESTED 2026-10-08T12:35:23-04:00