Helpy 2.8.0 - Stored Cross-Site Scripting
Summary
| Name | Helpy 2.8.0 - Stored Cross-Site Scripting |
| Code name | |
| Product | Helpy |
| Affected versions | 2.8.0 |
| State | Public |
| Release date | 2023-04-10 |
Vulnerability
| Kind | Stored cross-site scripting (XSS) |
| Rule | |
| Remote | Yes |
| CVSSv3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N |
| CVSSv3.1 Base Score | 7.1 |
| Exploit available | No |
| CVE ID(s) |
Description
Helpy version 2.8.0 allows an unauthenticated remote attacker to exploit an XSS stored in the application. This is possible because the application does not correctly validate the attachments sent by customers in the ticket.
Vulnerability
This vulnerability occurs because the application does not correctly validate the attachments sent by customers in the ticket.
Exploit
To exploit this vulnerability, simply submit the following malicious HTML code as an attachment to the ticket.
<!DOCTYPE html> <html> <body> <script> alert(document.domain); </script> </body> </html>
Evidence of exploitation
Our security policy
We have reserved the ID CVE-2023-0357 to refer to this issue from now on.
System Information
-
Version: Helpy 2.8.0
-
Operating System: GNU/Linux
Mitigation
There is currently no patch available for this vulnerability.
Credits
The vulnerability was discovered by Carlos Bello from Fluid Attacks' Offensive Team.
References
Vendor page https://github.com/helpyio/helpy/
Timeline
2023-01-17
Vulnerability discovered.
2022-01-17
Vendor contacted.
2023-04-10
Public Disclosure.
