{"id":"CVE-2026-29052","title":"The Calendar module for HumHub enables users to create one-time or recurring events, manage attendee invitations, and efficiently track all scheduled activities","summary":"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 …","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"humhub","product":"calendar","affected":["calendar < 1.8.11"],"patched":["calendar 1.8.11"],"published":"2026-03-05","updated":"2026-09-02","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-29052","references":[{"url":"https://github.com/humhub/calendar/releases/tag/v1.8.11","label":"security-advisories@github.com"},{"url":"https://github.com/humhub/calendar/security/advisories/GHSA-gqj3-pmp2-mrx8","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00155,"epssPercentile":0.05002,"ingestedAt":"2026-09-02T14:45:28.430Z","slug":"CVE-2026-29052","body":"## Overview\n\nThe 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.\n\n## Affected\n\n- `calendar < 1.8.11`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `calendar 1.8.11`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}