CVE-2025-49015
Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-49015- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-297
- Updated
- 2026-11-02
EUVDEUVD-2025-18625
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.
- Record
EUVD-2025-18625- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-px2c-r924-mwcc
Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates
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.
- Record
GHSA-px2c-r924-mwcc- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-297
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-49015- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-297
- Updated
- 2026-11-02
OSVGHSA-px2c-r924-mwcc
Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates
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.
- Record
GHSA-px2c-r924-mwcc- CVSS 3.1
- 4.9 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-297
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
CouchbaseNetClientNuGet |
before 3.7.1 | 3.7.1 |
CouchbaseNetClientNuGet |
before 3.7.1, plus listed versions 0.9.00.9.10.9.21.0.01.0.1 Show 45 moreShow less1.1.01.1.0.11.1.11.1.21.1.31.1.41.1.51.1.61.2.01.2.0-beta1.2.0-beta-21.2.0-beta-31.2.11.2.21.2.2.11.2.31.2.41.2.51.2.61.2.71.2.81.2.91.3.01.3.11.3.101.3.111.3.121.3.131.3.21.3.31.3.41.3.51.3.61.3.71.3.81.3.92.0.02.0.0-beta2.0.0-beta22.0.0.12.0.12.0.22.0.32.0.3.12.0.3.2 |
3.7.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-49015 is a medium vulnerability (CVSS 4.9) in Couchbase .net Sdk, published June 18, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. Fixed in CouchbaseNetClient 3.7.1.
References
forums.couchbase.com/tags/security
docs.couchbase.com/server/current/release-notes/relnotes.html
couchbase.com/alerts
nvd.nist.gov/vuln/detail/CVE-2025-49015
github.com/couchbase/couchbase-net-client/commit/04d1679b2178f922036be6e595b3d91f972c5ba3
Left out here: 160 versions. The JSON record has them.