CVE-2025-64765: astro Path Traversal

Description

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.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-22 Path Traversal

Affected Products

Vendor	Product	Versions
astro	astro	< 5.15.8

References

Advisories & Patches

https://github.com/withastro/astro/commit/6f800813516b07bbe12c666a92937525fddb58ce

Exploits

https://github.com/withastro/astro/security/advisories/GHSA-ggxq-hp9w-j794

Frequently Asked Questions

What is CVE-2025-64765? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-64765? +

CVE-2025-64765 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-64765? +

CVE-2025-64765 affects products from astro, specifically: astro. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-64765? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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