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openSUSE Leap 16.0 openSUSE-SU-2026-20529-2 Botan Severe TLS Vulnerability

opensuse
Calendar Grey April 21, 2026
Dist Opensuse Esm H88
This update addresses a critical bug in Botan, resolving a TLS 1.3 client auth bypass issue. Upgrade now for security.
An update that solves one vulnerability and has one bug fix can now be installed.

Description

This update for Botan fixes the following issues:

- CVE-2026-34582: Fixed a client authentication bypass in TLS 1.3 implementation (bsc#1261880)

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-16.0-551=1

Topics%20covered

Topics Covered

security advisory critical OpenSUSE client authentication TLS implementation botan

Patch

Package List

- openSUSE Leap 16.0:

Botan-3.7.1-160000.3.1

Botan-doc-3.7.1-160000.3.1

libbotan-3-7-3.7.1-160000.3.1

libbotan-devel-3.7.1-160000.3.1

python3-botan-3.7.1-160000.3.1

References

* bsc#1261880

References:

* https://www.suse.com/security/cve/CVE-2026-34582.html

Severity
critical
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20528-1
Rating: critical
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory critical OpenSUSE client authentication TLS implementation botan

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