VULNERABILITY INTELLIGENCE

CVE-2025-64525

CVSS score6.5 MEDIUM

EPSS probability1.24%

CISA KEVNot currently listed

Published2025-11-13

Last modified2026-10-07

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Description

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.

Weakness classification

security-advisories@github.com: CWE-918

Primary references

security-advisories@github.com — Product
security-advisories@github.com — Product
security-advisories@github.com — Patch
security-advisories@github.com — Exploit, Third Party Advisory