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USN-8115-1: pyOpenSSL vulnerabilities

🗓️ 23 Mar 2026 13:08:05Reported by UbuntuType 
ubuntu
 ubuntu🔗 ubuntu.com👁 2 Views

pyOpenSSL mishandles tlsext_servername and DTLS cookie callbacks, risking bad connections and possible code execution on Ubuntu 24.04 LTS and 25.10.

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IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a security bypass in pyOpenSSL [CVE-2026-27448, CVE-2026-27459]
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ATTACKERKB		CVE-2026-27459
17 Mar 202623:34
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AlpineLinux		CVE-2026-27448
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CBLMariner		CVE-2026-27448 affecting package pyOpenSSL for versions less than 24.2.1-2
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CBLMariner		CVE-2026-27459 affecting package pyOpenSSL for versions less than 24.2.1-2
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OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu22.04amd64python-openssl-doc21.0.0-1ubuntu0.1python-openssl-doc_21.0.0-1ubuntu0.1_amd64.deb
Ubuntu22.04arm64python-openssl-doc21.0.0-1ubuntu0.1python-openssl-doc_21.0.0-1ubuntu0.1_arm64.deb
Ubuntu22.04armhfpython-openssl-doc21.0.0-1ubuntu0.1python-openssl-doc_21.0.0-1ubuntu0.1_armhf.deb
Ubuntu22.04i386python-openssl-doc21.0.0-1ubuntu0.1python-openssl-doc_21.0.0-1ubuntu0.1_i386.deb
Ubuntu22.04ppc64elpython-openssl-doc21.0.0-1ubuntu0.1python-openssl-doc_21.0.0-1ubuntu0.1_ppc64el.deb
Ubuntu22.04riscv64python-openssl-doc21.0.0-1ubuntu0.1python-openssl-doc_21.0.0-1ubuntu0.1_riscv64.deb
Ubuntu22.04s390xpython-openssl-doc21.0.0-1ubuntu0.1python-openssl-doc_21.0.0-1ubuntu0.1_s390x.deb
Ubuntu24.04amd64python-openssl-doc23.2.0-1ubuntu0.1python-openssl-doc_23.2.0-1ubuntu0.1_amd64.deb
Ubuntu24.04arm64python-openssl-doc23.2.0-1ubuntu0.1python-openssl-doc_23.2.0-1ubuntu0.1_arm64.deb
Ubuntu24.04armhfpython-openssl-doc23.2.0-1ubuntu0.1python-openssl-doc_23.2.0-1ubuntu0.1_armhf.deb
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23 Mar 2026 13:08Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.19.8
CVSS 49.2
EPSS0.00043
SSVC
opensslserver namedtls cookieexception handlingubuntu versions
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