Linux · Debian · Security advisory · March 18, 2026

DEBIAN-CVE-2026-27448: pyopenssl security update

DEBIAN-CVE-2026-27448, released March 18, 2026, fixes 1 CVE in pyopenssl. None of them is reported as exploited. Patch Radar priority: Routine.

Routine
CVEs closed
1
None rated Critical
Exploited
0
None reported
Highest CVSS
5.4
Base score, 0 to 10
Highest EPSS
0.0026
17th percentile

Fixed package versions

ProductReleaseFixed in
pyopensslDebian 13.5 (trixie)25.0.0-1+deb13u1
pyopensslDebian 1426.0.0-1

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Routine CVE-2026-27448 pyOpenSSL allows TLS connection bypass via unhandled callback exception in set_tlsext_servername_callback5.4 0.0026 None reported
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