CVE-2026-18526: HumHub 1.18.4 / 1.18.4-pl1 – Stored Cross-Site Scripting in oEmbed confirmation

Published Aug 19, 2026

Updated

HumHub Community Edition 1.18.4 and 1.18.4-pl1 contain a stored Cross-Site Scripting (XSS) vulnerability in the oEmbed confirmation rendering workflow.

Affected Software

1 affected component

Humhub HumHub Community Edition=1.18.4, =1.18.4-pl1

Event History

Aug 19, 2026

CVE Published

via MITRE·02:17 PM

Data Sourced

via MITRE·02:17 PM

DescriptionWeakness

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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