OESA-2026-1729 pyOpenSSL security update

🗓️ 27 Mar 2026 14:03:52Reported by GoogleType

osv

osv🔗 osv.dev

Security update for PyOpenSSL fixes unhandled exceptions in server name callback and cookie overflow.

Reporter	Title	Published	Views	Family All 176
IBM Security Bulletins	Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a security bypass in pyOpenSSL [CVE-2026-27448, CVE-2026-27459]	21 May 202615:10	–	ibm
IBM Security Bulletins	Security Bulletin: pyOpenSSL TLS SNI Callback Exception Handling Flaw Allows Security Bypass	4 May 202612:18	–	ibm
IBM Security Bulletins	Security Bulletin: Multiple Vulnerabilities in pyOpenSSL bundled with IBM Fusion, IBM Fusion HCI, and IBM Fusion Data Cataloging	18 May 202622:19	–	ibm
IBM Security Bulletins	Security Bulletin: IBM SOAR QRadar Plugin App is vulnerable to using components with known vulnerabilities	6 May 202616:21	–	ibm
ATTACKERKB	CVE-2026-27459	17 Mar 202623:34	–	attackerkb
ATTACKERKB	CVE-2026-27448	17 Mar 202623:24	–	attackerkb
AlpineLinux	CVE-2026-27448	17 Mar 202623:24	–	alpinelinux
AlpineLinux	CVE-2026-27459	17 Mar 202623:34	–	alpinelinux
CBLMariner	CVE-2026-27448 affecting package pyOpenSSL for versions less than 24.2.1-2	25 Mar 202622:53	–	cbl_mariner
CBLMariner	CVE-2026-27459 affecting package pyOpenSSL for versions less than 24.2.1-2	25 Mar 202622:53	–	cbl_mariner

Source	Link
openeuler	www.openeuler.org/zh/security/security-bulletins/detail/
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-27448
nvd	www.nvd.nist.gov/vuln/detail/CVE-2026-27459

27 Mar 2026 14:15Current

5.9Medium risk

Vulners AI Score5.9

CVSS 3.19.8

CVSS 49.2

EPSS0.00043

SSVC

server name callback cookie generation overflow pyOpenSSL wrapper