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TI-2025-40103 Aliases CVE-2025-64765GHSA-ggxq-hp9w-j794

Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values

Priority LOW 37CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.

Summary

Astro is a web framework. Prior to version 5.15.8, a mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI() to determine which route to render, while the middleware uses context.url.pathname without applying the same normalization (decodeURI). This discrepancy may allow attackers to reach protected routes using encoded path variants that pass routing but bypass validation checks. This issue has been patched in version 5.15.8.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00538 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed astro (withastro): 5.15.8astro (npm): 5.15.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
withastroastrobefore 5.15.85.15.8Patch availableCNA
—astro (npm)before 5.15.85.15.8Patch availableGHSA-ggxq-hp9w-j794
  • astro Vendorwithastro Affected before 5.15.8 Fixed in 5.15.8 Patch available CNA
  • astro (npm) Vendor— Affected before 5.15.8 Fixed in 5.15.8 Patch available GHSA-ggxq-hp9w-j794

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*before 5.15.8Vulnerablewithastro
  • cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:* Versions before 5.15.8 Vulnerable ·withastro

Remediation

  • Fix · CNA astro (withastro) Fixed in 5.15.8
  • Fix · GHSA-ggxq-hp9w-j794 astro (npm) Fixed in 5.15.8 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-64765
  2. 2026-10-03 Alias added: GHSA-ggxq-hp9w-j794

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2024-37142 Server source code is exposed to the public if sourcemaps are enabled CVSS 4.0HIGH 7.8
  • TI-2025-34958 Unauthorized third-party images in Astro’s _image endpoint CVSS 4.0MEDIUM 6.9
  • TI-2025-39915 Server-side request forgery in withastro astro CVSS 3.1MEDIUM 6.5
  • TI-2025-38274 Astro's `X-Forwarded-Host` is reflected with no validation CVSS 3.1MEDIUM 6.5
  • TI-2026-36915 Astro: Reflected XSS via unescaped slot name CVSS 3.1HIGH 7.1
  • TI-2025-40102 Astro is vulnerable to Reflected XSS via the server islands feature CVSS 3.1HIGH 7.1
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences