Vulnerability in Pyca Pyopenssl
CVE-2026-27448
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to `set_tlsext_servername_callback` raised an unhandled exception, this would result in a connect…
EPSS: 0.000 (13.5th percentile) — read the EPSS interpretation.
Affected products
- Pyca Pyopenssl — versions >= 0.14.0, < 26.0.0
Weakness classification (CWE)
References
- https://github.com/pyca/pyopenssl/security/advisories/GHSA-vp96-hxj8-p424 (x_refsource_CONFIRM)
- https://github.com/pyca/pyopenssl/commit/d41a814759a9fb49584ca8ab3f7295de49a85aa0 (x_refsource_MISC)
- https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst#L27 (x_refsource_MISC)