{"action":"Upgrade pyopenssl to 26.0.0 or later.","affected":[{"fixed":"26.0.0","introduced":"22.0.0"}],"component":"pyopenssl","cve_ids":["CVE-2026-27459"],"ecosystem":"PyPI","epss":0.00748,"exploited":false,"fixed_versions":["26.0.0"],"ghsa_id":"GHSA-5pwr-322w-8jr4","id":"tcs_01M5KGYETQQG24KCZCRT97V3VZ","modified_at":"2026-07-13T07:15:42.174035827Z","published_at":"2026-03-18T00:16:19.273Z","references":["https://osv.dev/vulnerability/PYSEC-2026-2269","https://access.redhat.com/security/cve/CVE-2026-27459","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27459.json","https://access.redhat.com/errata/RHSA-2026:10754","https://access.redhat.com/errata/RHSA-2026:11856","https://access.redhat.com/errata/RHSA-2026:11916","https://access.redhat.com/errata/RHSA-2026:11996","https://access.redhat.com/errata/RHSA-2026:13508","https://access.redhat.com/errata/RHSA-2026:13512","https://access.redhat.com/errata/RHSA-2026:13545","https://access.redhat.com/errata/RHSA-2026:13553","https://access.redhat.com/errata/RHSA-2026:14835","https://access.redhat.com/errata/RHSA-2026:14873","https://access.redhat.com/errata/RHSA-2026:14874","https://access.redhat.com/errata/RHSA-2026:19375","https://access.redhat.com/errata/RHSA-2026:21017","https://access.redhat.com/errata/RHSA-2026:22465","https://access.redhat.com/errata/RHSA-2026:24853","https://access.redhat.com/errata/RHSA-2026:7224","https://access.redhat.com/errata/RHSA-2026:8437","https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst","https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4","https://bugzilla.redhat.com/show_bug.cgi?id=2448503","https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"PYSEC-2026-2269","url":"https://osv.dev/vulnerability/PYSEC-2026-2269"}],"summary":"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"}