CVE-2025-49015 json
Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates
published 2025-06-18 16 mo ago modified 2026-10-19 20 d ago also GHSA-px2c-r924-mwcc , EUVD-2025-18625
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | CouchbaseNetClient | <3.7.1 |
3.7.1 |
Classification
- Weakness
-
- CWE-297 Improper Validation of Certificate with Host Mismatch
References
-
github.com
/couchbase/couchbase-net-client/commit/04d1679b2178f922036be6e595b3d91f972c5ba3
web
-
couchbase.com
/alerts/
vendor-advisory
-
forums.couchbase.com
/tags/security
web, issue-tracking
-
docs.couchbase.com
/server/current/release-notes/relnotes.html
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2025-49015
advisory
-
github.com
/couchbase/couchbase-net-client
package
-
couchbase.com
/alerts
web
Sources
- CVE List CVE-2025-49015
- GitHub Advisory GHSA-px2c-r924-mwcc
- NVD CVE-2025-49015
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