Open-Source Security Intelligence

Know every vulnerability
before it knows you.

DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.

Checkout DevGuardView on GitHub
Search

GHSA-64rr-pp78-62ww

HighCVSS 8.7 / 10
Published May 15, 2026·Last modified May 15, 2026
Affected Components(0)

No affected components available

Description

Impact

NukeViet CMS <= 4.5.08 contains a Stored Cross-Site Scripting (XSS) vulnerability caused by insufficient server-side input sanitization in the Request class. The application relies primarily on client-side filtering to sanitize HTML tags and attributes in user-submitted content, which can be bypassed by intercepting and modifying HTTP requests directly (e.g., using Burp Suite).

This affects any module or functionality that accepts user HTML input through the Request class. An attacker can inject malicious payloads such as <iframe srcdoc="&lt;img src=1 onerror=alert(document.cookie)&gt;"></iframe>, which are stored server-side and executed in the browser of any user who views the content.

Who is impacted:

  • Administrators and moderators who view user-submitted content (e.g., contact messages, comments, or any module using the Request class for HTML input).
  • The Contact module was used as a proof of concept, but the vulnerability is not limited to this module.
  • No authentication is required to exploit this vulnerability, making it accessible to any anonymous visitor.

Potential impact includes:

  • Session hijacking via cookie theft (for non-HttpOnly cookies)
  • Performing actions on the application under the victim's identity
  • Defacement or redirection to phishing pages
  • Phishing attacks via manipulated email notifications

Patches

This vulnerability has been fixed in NukeViet 4.5.08. Users should upgrade to version >= 4.5.08.

Workarounds

  • Implement server-side HTML sanitization in the Request class to strip or encode dangerous tags and attributes (e.g., <iframe>, srcdoc, event handlers such as onerror, onload).
  • Apply a Content Security Policy (CSP) header to restrict inline script execution.
  • Ensure cookies are set with the HttpOnly flag to mitigate cookie theft via XSS.

Resources

  • Affected source: https://github.com/nukeviet/nukeviet/blob/nukeviet4.5/modules/contact/funcs/main.php
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'): https://cwe.mitre.org/data/definitions/79.html
Risk Scores
Base Score
8.7

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data.

Threat Intelligence
8.0

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
0.35%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Browse More

High severity
Scan your project

Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.

Checkout DevGuard