Nextcloud is an open-source, self-hosted productivity platform The Nextcloud Mail application prior to versions 1.10.4 and 1.11.0 does by default not render images in emails to not leak the read. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable, low attack complexity.
Nextcloud
Information Disclosure
Mail
NVD
GitHub
CVSS 3.1
3.5
EPSS
0.8%