CVE-2023-0357 Cross-site scripting in Helpy

Medium 6.1 Published 4 Apr 2023 Updated 13 Feb 2025

Unauthenticated attackers can inject malicious scripts via ticket attachments in Helpy, potentially leading to code execution or account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-0357?

CVE-2023-0357 is a medium-severity cross-site scripting vulnerability in Helpy, published on 4 Apr 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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.

Weakness: CWE-79

Which versions are affected by CVE-2023-0357?

It affects 1 product.

Products include Helpy.io Helpy.

How do I fix CVE-2023-0357?

No fix has been published for CVE-2023-0357 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2023-0357 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0357 exists.

Sources

Also known as GHSA-g23c-4prh-q9fg.