CVE-2026-29052

6.9 mediumEPSS 0.2%

Medium (6.9) in humhub calendar. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

6.9 medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-03-05
Modified: 2026-09-02
Record from: the NVD, synced 2026-10-19

Affected

humhub:calendar

References

https://github.com/humhub/calendar/releases/tag/v1.8.11
https://github.com/humhub/calendar/security/advisories/GHSA-gqj3-pmp2-mrx8

Check your stack JSON