dbcve.org
Sync GatewayApplication · Couchbase

CVE-2025-52490

HIGH · 7.3 CVSS v3.1 Published 2025-07-29
Fix available
A fix is available. Upgrade to 3.2.6 or later.
See remediation →
82/100
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
An issue was discovered in Couchbase Sync Gateway before 3.2.6. In sgcollect_info_options.log and sync_gateway.log, there are cleartext passwords in redacted and unredacted output.

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 Sync Gateway versions before 3.2.6 write cleartext passwords to sgcollect_info_options.log and sync_gateway.log files, including in output that should be redacted. This exposes credentials in log files, allowing unauthorized access to systems using those credentials.

MitigationUpgrade Couchbase Sync Gateway to version 3.2.6 or later to resolve the password logging vulnerability. Review existing logs for any exposed credentials and rotate affected passwords.

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
Sync GatewayApplication
Affected:< 3.2.6

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
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/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 checks

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

  1. Identify installed Couchbase Sync Gateway version
    Run the command `sync_gateway --version` or check the version via the admin REST API at `http://localhost:4985/` to retrieve the version information.
    Affected if The version number is less than 3.2.6 (e.g., 3.2.5, 3.2.4, 3.1.x, etc.)
  2. Locate sgcollect_info_options.log file
    Search for this file in the default logging directory, commonly found under `/opt/couchbase-sync-gateway/logs/` or the directory specified in the Sync Gateway configuration.
    Affected if The file exists and contains cleartext passwords or credential strings that should have been redacted.
  3. Locate sync_gateway.log file
    Find this log file in the same logging directory as sgcollect_info_options.log, typically under `/opt/couchbase-sync-gateway/logs/` or the configured log path.
    Affected if The file exists and contains readable passwords, API keys, or secret values in plain text.
  4. Search log files for password patterns
    Use grep or a text search tool to look for suspicious patterns: `grep -i 'password' /path/to/sgcollect_info_options.log` and `grep -i 'password' /path/to/sync_gateway.log`. Also search for base64-like strings near auth-related keywords.
    Affected if Any cleartext password, secret, or credential value appears in the logs where redaction was expected.

You are affected if your installed Couchbase Sync Gateway version is below 3.2.6 AND any of your log files (sgcollect_info_options.log or sync_gateway.log) contain unredacted password or credential strings.

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 3.2.6 or later
Fixed in 3.2.6
Interim mitigation

Upgrade Couchbase Sync Gateway to version 3.2.6 or later to resolve the password logging vulnerability. Review existing logs for any exposed credentials and rotate affected passwords.

Recommended fix High confidence

Sync Gateway 3.2.6

  1. Backup your current Sync Gateway configuration and database files
  2. Schedule a maintenance window for the upgrade
  3. Upgrade Sync Gateway to version 3.2.6 or later by following your organization's standard upgrade procedure
  4. After upgrade, verify the version number matches 3.2.6 or higher
  5. Review sgcollect_info_options.log and sync_gateway.log files to confirm passwords are no longer appearing in cleartext
  6. If using automated deployment tools, update your version manifests to pin Sync Gateway to >= 3.2.6 to prevent accidental downgrade
Caveat Point releases typically maintain backward compatibility; review release notes for any specific migration notes

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

Fix this in Sync Gateway Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.

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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-2025-52490 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