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openSUSE Leap 16.0 python-secure Security Threat X509 Bug Fix Updates

opensuse
Calendar Grey April 21, 2026
Dist Opensuse Esm H88
Update for python-cryptography solves two important issues on openSUSE with recommended patching instructions detail.
An update that solves 2 vulnerabilities and has 2 bug fixes can now be installed.

Description

This update for python-cryptography fixes the following issues:

- CVE-2026-34073: Fixed X.509 bypass of name constraints on wildcard SANs with matching peer names. (bsc#1260876)

- CVE-2026-26007: missing validation can lead to security issues for signature verification (ECDSA) and shared key negotiation (ECDH) (bsc#1258074).

Patch instructions:

To install this openSUSE security update use the suse recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

zypper in -t patch openSUSE-Leap-16.0-522=1

Topics%20covered

Topics Covered

security advisory important signature verification OpenSUSE python-cryptography x509 bypass

Patch

Package List

- openSUSE Leap 16.0:

python313-cryptography-44.0.3-160000.3.1

References

* bsc#1258074

* bsc#1260876

References:

* https://www.suse.com/security/cve/CVE-2026-26007.html

* https://www.suse.com/security/cve/CVE-2026-34073.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20506-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory important signature verification OpenSUSE python-cryptography x509 bypass

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