Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Fixed packages 3

Vulnerabilities 2

• High 7.2
  CVE-2026-27459

  pyOpenSSL DTLS cookie callback buffer overflow

  pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL…

  pyca pyopenssl airflow-3 py3-cassandra-medusa Debian Ubuntu Azure Linux Alpine Wolfi PyPI
  Mar 17, 2026
• Low 1.7
  CVE-2026-27448

  pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback

  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. …

  pyca pyopenssl airflow-3 py3-cassandra-medusa Debian Ubuntu Azure Linux Alpine Wolfi PyPI
  Mar 17, 2026

References

• article
  https://images.redhat.com/
• report
  https://access.redhat.com/security/cve/CVE-2026-27459
• article
  https://access.redhat.com/security/updates/classification/
• report
  https://access.redhat.com/security/cve/CVE-2026-27448
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7224.json
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2448508
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-27448
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-27448
• article
  https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst#L27
• article
  https://github.com/pyca/pyopenssl/commit/d41a814759a9fb49584ca8ab3f7295de49a85aa0
• article
  https://github.com/pyca/pyopenssl/security/advisories/GHSA-vp96-hxj8-p424
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2448503
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-27459
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-27459
• article
  https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst
• article
  https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408
• article
  https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4