VDB
DEBIAN-CVE-2026-27448
DEBIAN-CVE-2026-27448
PUBLISHED
CVSS 5.300000190734863 MEDIUM
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.
Risk Scores
CVSS 3.1
5.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | pyopenssl | 0, 25.0.0-1, 25.1.0-1 |
| Debian:12 | pyopenssl | 24.0.0-1, 0, 23.2.0-1 |
| Debian:11 | pyopenssl | 24.2.1-1, 25.0.0-1, 25.1.0-1 |
| Debian:14 | pyopenssl | 25.3.0-1, 25.3.0-2, 25.0.0-1 |
Exploit Intelligence
- CVE-2026-27448.yml (github-poc)
Timeline
- Mar 18, 2026 CVE Published
- Apr 28, 2026 CVE Updated