CVE-2026-90799 – Unsafe binary deserialisation in chttpd in Apache CouchDB 3.5.2 and below on all platforms

Unsafe binary deserialisation in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows an authenticated user to cause a denial of service via memory exhaustion.

Users are recommended to upgrade to version 3.5.3, which fixes this issue.