Skip to content

Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates

Moderate severity GitHub Reviewed Published Jun 18, 2025 to the GitHub Advisory Database • Updated Jun 18, 2025

Package

nuget CouchbaseNetClient (NuGet)

Affected versions

< 3.7.1

Patched versions

None

Description

The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.

References

Published by the National Vulnerability Database Jun 18, 2025
Published to the GitHub Advisory Database Jun 18, 2025
Reviewed Jun 18, 2025
Last updated Jun 18, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS score

Weaknesses

CVE ID

CVE-2025-49015

GHSA ID

GHSA-px2c-r924-mwcc

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.