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Back to active CVEs
Medium · CVSS 4.9CVE-2025-49015GHSA-PX2C-R924-MWCC

Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificatesCVE-2025-49015

Answer in brief

CVE-2025-49015 records a Medium severity (CVSS 4.9) vulnerability in Couchbase .NET SDK (client library) does not properly enable hostname verification for TLS certificates. The current sources do not mark it as known exploited. The current feed maps CouchbaseNetClient (nuget). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 18, 2025Updated Oct 19, 2026Source checked Oct 19, 2026First seen by HOL Oct 19, 2026Material review Oct 19, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 4.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps CouchbaseNetClient (nuget). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
CouchbaseNetClientnuget<3.7.13.7.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for CouchbaseNetClient.
  2. 2Review the reported fix. Update CouchbaseNetClient to 3.7.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jun 18, 2025

    Evidence: source:ghsa:source_dates:source-dates:record

  2. Source modified

    Oct 19, 2026

    Evidence: source:ghsa:source_dates:source-dates:record

  3. First seen by HOL

    Oct 19, 2026

Sources and claim methodology

  • Source referencedocs.couchbase.com
  • Source referenceforums.couchbase.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • NVD vulnerability recordnvd.nist.gov
  • Source referencecouchbase.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-297
Source
GitHub Security Advisories
Source checked
Oct 19, 2026
References
6 linked sources
Open source record