CVE-2021-42763: Couchbase Server

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Couchbase Server before 6.6.3 and 7.x before 7.0.2 stores Sensitive Information in Cleartext. The issue occurs when the cluster manager forwards a HTTP request from the pluggable UI (query workbench etc) to the specific service. In the backtrace, the Basic Auth Header included in the HTTP request, has the "@" user credentials of the node processing the UI request.

Affected products

• Couchbase Couchbase Server: before 4.6.0 (fixed in 4.6.0); from 5.0.0, before 6.1.0 (fixed in 6.1.0); from 6.5.0, up to and including 6.6.2; version 7.0.0 only; version 7.0.1 only

Published 2021-11-02. Last modified 2026-06-17.