CVE-2021-32652: Nextcloud Mail

Medium severity, CVSS 4.3. EPSS: 1.1% chance of exploitation in the next 30 days.

Nextcloud Mail is a mail app for the Nextcloud platform. A missing permission check in Nextcloud Mail before 1.4.3 and 1.8.2 allows another authenticated users to access mail metadata of other users. Versions 1.4.3 and 1.8.2 contain patches for this vulnerability; no workarounds other than the patches are known to exist.

Affected products

• Nextcloud Mail: before 1.4.3 (fixed in 1.4.3); from 1.5.5, before 1.8.2 (fixed in 1.8.2)

Published 2021-06-01. Last modified 2026-06-17.