CVE-2026-40230 Helpy 2.8.0 - Stored XSS in knowledgebase Doc body rendering

Medium 4.8 Published 29 Apr 2026 Updated 29 Apr 2026

An authenticated attacker can inject malicious scripts into knowledge base documents, potentially compromising other users' sessions.

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

What is CVE-2026-40230?

CVE-2026-40230 is a medium-severity cross-site scripting vulnerability in helpyio helpy, published on 29 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Helpy contains a stored cross-site scripting vulnerability in the knowledge base Doc rendering logic. An authenticated attacker with admin or agent editor privileges can persist arbitrary HTML or JavaScript in the body field of a knowledge base Doc.This issue affects helpy: 2.8.0.

Weakness: CWE-79

Which versions are affected by CVE-2026-40230?

It affects 1 product.

Products include Helpy.io Helpy.

How do I fix CVE-2026-40230?

No fix has been published for CVE-2026-40230 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-2026-40230 being exploited?

There is no known exploitation of CVE-2026-40230 in the wild and no public exploit code.

Sources

Also known as GHSA-cgp7-5x28-x8x9.