CVE-2026-29052CWE-79cross-site-scripting

CVE-2026-29052

Medium · published March 5, 2026

CVSS v3.1

6.1

EPSS

Percentile

19.3

In the wild

Unconfirmed

What it is

The Calendar module for HumHub enables users to create one-time or recurring events, manage attendee invitations, and efficiently track all scheduled activities. Prior to version 1.8.11, a Stored Cross-Site Scripting (XSS) vulnerability in the Event Types of the HumHub Calendar module impacts users viewing events created by an administrative account. This issue has been patched in version 1.8.11.

The record

Technical detail

CVSS v3.1: 6.1 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0: Not supplied
EPSS: 0.00279 · 19.3th percentile
Weakness: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published: 2026-03-05T11:16Z

Affected products (1)

Product	Versions	Fixed in
humhub/calendar	< 1.8.11	1.8.11

References (2)

https://github.com/humhub/calendar/releases/tag/v1.8.11 · [email protected]https://github.com/humhub/calendar/security/advisories/GHSA-gqj3-pmp2-mrx8 · [email protected]

EPSS history

Timeline

05 MAR 05:48Z
HumHub Calendar Module: Stored XSS in Event Types
cvelistv5