An unlimited gzip decompression routine in chttpd in Apache CouchDB 3.5.2 and below on all platforms allows any remote client to cause a denial of service via memory exhaustion.
Users are recommended to upgrade to version 3.5.3, which fixes this issue.
Improper Handling of Highly Compressed Data (Data Amplification) The product does not handle or incorrectly
handles a compressed input with a very high compression ratio
that produces a large output.