CVE-2023-50436
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 · uneditedAn issue was discovered in Couchbase Server before 7.2.4. ns_server admin credentials are leaked in encoded form in the diag.log file. The earliest affected version is 7.1.5.
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 · moderate confidenceIn affected Couchbase Server versions (7.1.5 through 7.2.3), ns_server admin credentials are written to the diag.log file in encoded (not plaintext) form. Anyone with access to diagnostic logs can decode these credentials and gain administrative access to the ns_server component.
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>= 7.1.5, < 7.2.4CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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 checksWork through these to decide whether this CVE applies to you.
-
Check Couchbase Server versionRun 'couchbase-cli version -c localhost' or check the installation directory for version information. Compare the installed version against the affected range: 7.1.5 through 7.2.3 (versions >= 7.1.5 and < 7.2.4 are vulnerable).Affected if The installed version is 7.1.5, 7.1.6, 7.2.0, 7.2.1, 7.2.2, or 7.2.3.
-
Locate the diag.log fileFind the diagnostic log file. Default paths include '/opt/couchbase/var/lib/couchbase/logs/diag.log' or check the UI under 'Logs > Diagnostic Logs'. The file is typically created in the Couchbase logs directory.Affected if The diag.log file exists on the system.
-
Search for encoded credentials in diag.logSearch the diag.log file for patterns containing 'ns_server', 'credentials', 'admin', or encoded strings. Look for base64-encoded content or other encoded credential formats within the log entries related to ns_server initialization or authentication.Affected if Encoded administrative credentials for ns_server appear in the diagnostic logs.
-
Verify log file accessCheck file system permissions on the diag.log and determine if unauthorized users or processes have read access to the log directory.Affected if Users other than administrators can read the diagnostic logs.
-
Check for evidence of credential exposureIf encoded strings are found in logs, attempt to decode a sample using common encoding schemes (such as base64) to confirm they represent valid admin credentials. Also review if logs have been shared or transmitted to external systems.Affected if Encoded credentials in logs can be successfully decoded to plaintext admin credentials.
A user is affected if Couchbase Server version 7.1.5 through 7.2.3 is installed and diagnostic logs contain encoded ns_server admin credentials that can be decoded to gain unauthorized administrative access.
Generated from the published advisory. Verify against your own configuration.
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 · scoped7.2.4
Upgrade to Couchbase Server 7.2.4 or later to prevent credential leakage. As a precaution, rotate any admin credentials that may have been exposed in logs.
7.2.4 or later
- Upgrade Couchbase Server from any version >= 7.1.5 and < 7.2.4 to version 7.2.4 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-50436 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-50436 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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.
- 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