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Couchbase ServerApplication · Couchbase

CVE-2023-49338

HIGH · 7.5 CVSS v3.1 Published 2024-02-28
Fix available
A fix is available. Upgrade to 7.2.4 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Couchbase Server 7.1.x and 7.2.x before 7.2.4 does not require authentication for the /admin/stats and /admin/vitals endpoints on TCP port 8093 of localhost.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Couchbase Server 7.1.x and 7.2.x before 7.2.4 does not require authentication for the /admin/stats and /admin/vitals endpoints on TCP port 8093 of localhost, allowing unauthenticated attackers to access sensitive operational statistics and system vitals information.

MitigationUpgrade Couchbase Server to version 7.2.4 or later to patch this vulnerability. As an interim measure, ensure proper network isolation and firewall rules restrict access to port 8093.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Couchbase ServerApplication
Affected:>= 4.0.0, < 7.2.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Couchbase Server version
    Run the command 'couchbase-cli server-info -c localhost' or check the installed Couchbase Server version via package manager or installation directory.
    Affected if The installed version is greater than or equal to 4.0.0 and less than 7.2.4.
  2. Verify port 8093 is listening
    Run 'netstat -an | grep 8093' or 'ss -tlnp | grep 8093' on the Couchbase Server host to confirm the service is bound and listening on TCP port 8093.
    Affected if Port 8093 is open and accepting connections on the target host.
  3. Test unauthenticated access to /admin/stats
    Send an HTTP GET request to 'http://localhost:8093/admin/stats' using curl or similar tool. No authentication headers should be provided.
    Affected if The endpoint returns HTTP 200 with JSON data containing operational statistics without requiring any authentication.
  4. Test unauthenticated access to /admin/vitals
    Send an HTTP GET request to 'http://localhost:8093/admin/vitals' using curl or similar tool. No authentication headers should be provided.
    Affected if The endpoint returns HTTP 200 with JSON data containing system vitals information without requiring any authentication.

A host is affected if it runs Couchbase Server version 7.1.x or 7.2.x before 7.2.4 and port 8093 responds to requests at /admin/stats or /admin/vitals without authentication.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 7.2.4 or later
Fixed in 7.2.4
Interim mitigation

Upgrade Couchbase Server to version 7.2.4 or later to patch this vulnerability. As an interim measure, ensure proper network isolation and firewall rules restrict access to port 8093.

Recommended fix High confidence

Couchbase Server 7.2.4 or later

  1. 1. Back up your Couchbase Server data and configuration before upgrading.
  2. 2. Download Couchbase Server version 7.2.4 or later from the official Couchbase downloads page.
  3. 3. Stop the Couchbase Server service gracefully.
  4. 4. Install the new version of Couchbase Server (7.2.4 or later) on the target environment.
  5. 5. Start the Couchbase Server service.
  6. 6. Verify that the /admin/stats and /admin/vitals endpoints on TCP port 8093 now require authentication.
  7. 7. Test all critical workloads to ensure functionality after the upgrade.
Caveat Review Couchbase Server 7.2.4 release notes for any breaking changes or deprecations relevant to your deployment before upgrading.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Couchbase Server Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-49338 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data