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Package details: pkg:pypi/pyopenssl@21.0.0
purl pkg:pypi/pyopenssl@21.0.0
Next non-vulnerable version 26.0.0
Latest non-vulnerable version 26.0.0
Risk 2.5
Vulnerabilities affecting this package (1)
Vulnerability Summary Fixed by
VCID-dt7c-fvqj-2bek
Aliases:
CVE-2026-27448
GHSA-vp96-hxj8-p424
pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback If a user provided callback to `set_tlsext_servername_callback` raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this callback for any security-sensitive behavior, this could allow bypassing it. Unhandled exceptions now result in rejecting the connection. Credit to **Leury Castillo** for reporting this issue.
26.0.0
Affected by 0 other vulnerabilities.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version
2026-05-06T16:31:07.958447+00:00 GitLab Importer Affected by VCID-dt7c-fvqj-2bek https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/pyOpenSSL/CVE-2026-27448.yml 38.6.0
2026-04-29T23:25:47.668478+00:00 GitLab Importer Affected by VCID-dt7c-fvqj-2bek https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/pyOpenSSL/CVE-2026-27448.yml 38.5.0
2026-04-19T18:05:25.505936+00:00 GitLab Importer Affected by VCID-dt7c-fvqj-2bek https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/pyOpenSSL/CVE-2026-27448.yml 38.4.0