CVE-2026-29048: Humhub

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

HumHub is an Open Source Enterprise Social Network. In version 1.18.0, a cross-site scripting vulnerability was identified in the Button component of version 1.18.0. Due to inconsistent output encoding at several points within the software, malicious scripts could be injected and executed in the context of the user's browser. This issue has been patched in version 1.18.1.

Affected products

• Humhub Humhub: version 1.18.0 only

Published 2026-03-06. Last modified 2026-06-17.