Not Failing Securely ('Failing Open') Affecting python39-oci-sdk package, versions <0:2.187.0-1.0.5.el9


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-ORACLE9-PYTHON39OCISDK-21432053
  • published22 Oct 2026
  • disclosed18 Mar 2026

Introduced: 18 Mar 2026

CVE-2026-27448  (opens in a new tab)
CWE-636  (opens in a new tab)

How to fix?

Upgrade Oracle:9 python39-oci-sdk to version 0:2.187.0-1.0.5.el9 or higher.
This issue was patched in ELSA-2026-604898.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39-oci-sdk package and not the python39-oci-sdk package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to set_tlsext_servername_callback raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this callback for any security-sensitive behavior, this could allow bypassing it. Starting in version 26.0.0, unhandled exceptions now result in rejecting the connection.

CVSS Base Scores

version 3.1