CVE-2026-40229

7th percentile - higher than 7% of all known CVEs

Helpy contains a stored cross-site scripting vulnerability in the post author display logic. Any registered user can persist arbitrary HTML in their account name field and cause it to be rendered unescaped in public forum threads where they participate, in the admin ticket view, and in HTML notification emails sent to other users. This issue affects helpy: 2.8.0.

An attacker can execute arbitrary JavaScript in the browsers of other users, including administrators, potentially leading to session takeover. Only account registration is required.

Update Helpy to a patched version or implement output escaping for the username field. Consider restricting the ability to register new accounts.