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OpenAdvisories
High · 7.7 CVE-2026-90797 EUVD-2026-105156GHSA-r5m6-9384-3274

Apache CouchDB: Pre-authentication gzip decompression bomb via POST /_session

Published Oct 20, 2026 · Updated Oct 20, 2026 · Assigned by apache

Description

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.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache CouchDB < 3.5.3 3.5.3

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS couchdb No fix yet —

References