CVE-2020-8279: Nextcloud Social

High severity, CVSS 7.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Missing validation of server certificates for out-going connections in Nextcloud Social < 0.4.0 allowed a man-in-the-middle attack.

Affected products

• Nextcloud Social: before 0.4.0 (fixed in 0.4.0)

Published 2020-11-19. Last modified 2026-06-17.