CVE-2024-52521: Nextcloud Server

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Nextcloud Server is a self hosted personal cloud system. MD5 hashes were used to check background jobs for their uniqueness. This increased the chances of a background job with arguments falsely being identified as already existing and not be queued for execution. By changing the Hash to SHA256 the probability was heavily decreased. It is recommended that the Nextcloud Server is upgraded to 28.0.10, 29.0.7 or 30.0.0.

Affected products

• Nextcloud Nextcloud Server: from 28.0.0, before 28.0.10 (fixed in 28.0.10); from 29.0.0, before 29.0.7 (fixed in 29.0.7)

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