Cross-site Request Forgery (CSRF) Affecting astro package, versions <4.16.17
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published19 Dec 2024
- disclosed18 Dec 2024
- creditKageShiron
Introduced: 18 Dec 2024
CVE-2024-56140 (opens in a new tab)How to fix?
Upgrade astro to version 4.16.17 or higher.
Overview
astro is an Astro is a modern site builder with web best practices, performance, and DX front-of-mind.
Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF) through the function createOriginCheckMiddleware due to improper validation of the content-type header
PoC
fetch('http://test.example.com', { method: 'POST', credentials: 'include' });
// Pattern 2.2 Blob object without type
fetch('https://test.example.com', {
method: 'POST',
credentials: 'include',
body: new Blob(['a=b'], {}),
});