CVE-2018-3764: Nextcloud Contacts

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

In Nextcloud Contacts before 2.1.2, a missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected group names, hence malicious search results could only be crafted by privileged users like admins or group admins.

Affected products

• Nextcloud Contacts: before 2.1.2 (fixed in 2.1.2)

Published 2018-07-05. Last modified 2026-06-17.