Is there a patch available for CVE-2025-15346?

Yes, a patch is available for CVE-2025-15346. Update the affected software to the latest version immediately.

Python CVE-2025-15346

Improper Authentication (CWE-287)

2026-01-08 facts@wolfssl.com

GHSA-vj87-jj27-4h9c

Python TLS

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 08, 2026 - 00:15 nvd

N/A

DescriptionNVD

A vulnerability in the handling of verify_mode = CERT_REQUIRED in the wolfssl Python package (wolfssl-py) causes client certificate requirements to not be fully enforced.

Because the WOLFSSL_VERIFY_FAIL_IF_NO_PEER_CERT flag was not included, the behavior effectively matched CERT_OPTIONAL: a peer certificate was verified if presented, but connections were incorrectly authenticated when no client certificate was provided.

This results in improper authentication, allowing attackers to bypass mutual TLS (mTLS) client authentication by omitting a client certificate during the TLS handshake.

The issue affects versions up to and including 5.8.2.

AnalysisAI

A vulnerability in the handling of verify_mode = CERT_REQUIRED in the wolfssl Python package (wolfssl-py) causes client certificate requirements to not be fully enforced.

Technical ContextAI

Classified as CWE-287 (Improper Authentication). A vulnerability in the handling of verify_mode = CERT_REQUIRED in the wolfssl Python package (wolfssl-py) causes client certificate requirements to not be fully enforced.

This results in improper authentication, allowing attackers to bypass mu

Affected ProductsAI

A vulnerability in the handling of verify_mode = CERT_REQUIRED in the wolfssl Python package (wolfssl-py) causes client certificate requirements to no

RemediationAI

Monitor vendor advisories for a patch.

CVE-2025-15346 vulnerability details – vuln.today

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