CVE-2024-52509: Nextcloud Mail

Medium severity, CVSS 5.7. EPSS: 0.5% chance of exploitation in the next 30 days.

Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. The Nextcloud mail app incorrectly allowed attaching shared files without download permissions as attachments. This allowed users to send them the files to themselves and then downloading it from their mail clients. It is recommended that the Nextcloud Mail is upgraded to 2.2.10, 3.6.2 or 3.7.2.

Affected products

• Nextcloud Mail: from 2.2.0, before 2.2.10 (fixed in 2.2.10); from 3.6.0, before 3.6.2 (fixed in 3.6.2); from 3.7.0, before 3.7.2 (fixed in 3.7.2)

Published 2024-11-15. Last modified 2026-06-17.