CVE-2026-93769
HighCVSS 7.2Summary
HumHub 1.18.5 is affected by a stored cross-site scripting (XSS) vulnerability that allows any user holding the delegated, non-system-administrator Manage Users permission (admin_manage_users) to inject persistent HTML/JavaScript into a Profile Field Category title.
Risk Assessment
An attacker with delegated admin permissions can execute malicious scripts in other users' browsers, potentially hijacking sessions or performing actions on their behalf. This can lead to privilege escalation and account compromise.
Recommendation
Update HumHub to a version that fixes this vulnerability, or restrict admin_manage_users permissions to trusted individuals. Additionally, consider implementing input sanitization mechanisms.
Other vulnerabilities in HumHub
See all- CVE-2026-18430High
HumHub 1.18.4 contains a stored cross-site scripting (XSS) vulnerability in the comment-deletion notification flow. A Space administrator can delete another user's comment, choose to notify the original author, and place HTML/JavaScript in the deletion reason.
- CVE-2026-18756High
HumHub Community Edition 1.18.4 contains a reflected XSS vulnerability in the space membership-request workflow. An attacker can place attacker-controlled button configuration in the options query-string parameter of the request-membership-form, lure an authenticated non-member into submitting the legitimate form, and cause the server to return JavaScript containing attacker-controlled code.
- CVE-2026-18526High
HumHub Community Edition 1.18.4 and 1.18.4-pl1 contain a stored Cross-Site Scripting (XSS) vulnerability in the oEmbed confirmation rendering workflow.
- CVE-2026-47657High
Vulnerability in HumHub (enterprise social network) allows any authenticated user to remove all members from any Space, regardless of their role. Missing access control in the member management controller.
Original NVD description (English source)
HumHub 1.18.5 is affected by a stored cross-site scripting (XSS) vulnerability that allows any user holding the delegated, non-system-administrator Manage Users permission (admin_manage_users) to inject persistent HTML/JavaScript into a Profile Field Category title.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS