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HumHub Button Component Cross-Site Scripting Vulnerability

Vulnerability

A cross-site scripting vulnerability has been identified in the Button component of HumHub version 1.18.0. This issue arises from inconsistent output encoding, which allows malicious scripts to be injected and executed in the context of the user's browser. The vulnerability has been patched in version 1.18.1.

Impact

Exploitation of this vulnerability allows for cross-site scripting, where injected scripts are executed in the user's browser.

Remediation

Users are advised to upgrade to HumHub version 1.18.1 or the latest stable release.

Added: Mar 6, 2026, 7:26 AM
Updated: Mar 6, 2026, 7:26 AM

Vulnerability Rating

Custom Algorithm
spread
3.4
impact
1.7
exploitability
5.8
remediation
7.7
relevance
3.5
threat
3.2
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.