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OpenAdvisories

Package · Ubuntu

pyopenssl

4 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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  • 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 pyopenssl pyopenssl Debian Ubuntu Alpine PyPI
  • High 8.1
    CVE-2018-1000807

    PyOpenSSL Use-After-Free vulnerability

    Python Cryptographic Authority pyopenssl version prior to version 17.5.0 contains a CWE-416: Use After Free vulnerability in X509 object handling that can result in Use after free can lead to possible denial of service or remote code execution.. This attack a…

    pyopenssl pyopenssl pyopenssl py-openssl Debian Ubuntu Alpine PyPI