1.7
Low
CVE-2026-27448 pyOpenSSL is a Python wrapper around the OpenSSL library
Description
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 connection being accepted. If a user was relying on this callback for any security-sensitive behavior, this could allow bypassing it. Starting in version 26.0.0, unhandled exceptions now result in rejecting the connection.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| pyopenssl 0.14 | 0.14.0 → < 26.0.0 | 26.0.0 |
References
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
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