openSUSE Leap 16.0 python-Flask Moderate Info Disclosure CVE-2026-27205
opensuse
June 3, 2026
An update that solves one vulnerability and has one bug fix can now be installed.
Description
This update for python-Flask fixes the following issue:
- CVE-2026-27205: information disclosure due to Flask session not adding the `Vary: Cookie` header (bsc#1258700).
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-16.0-878=1
Patch
Package List
- openSUSE Leap 16.0:
python313-Flask-3.1.1-160000.3.1
python313-Flask-doc-3.1.1-160000.3.1
References
* bsc#1258700
References:
* https://www.suse.com/security/cve/CVE-2026-27205.html
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Severity
moderate
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Low
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Critical
Announcement ID: openSUSE-SU-2026:20885-1
Rating: moderate
Affected Products:
openSUSE Leap 16.0
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