python311-Flask-3.1.3-1.1 on GA media SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2026:10264-1 Final 1 1 2026-02-26T00:00:00Z current 2026-02-26T00:00:00Z 2026-02-26T00:00:00Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z python311-Flask-3.1.3-1.1 on GA media These are all security issues fixed in the python311-Flask-3.1.3-1.1 package on the GA media of openSUSE Tumbleweed. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). openSUSE-Tumbleweed-2026-10264 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/security/rating/ SUSE Security Ratings https://www.suse.com/security/cve/CVE-2026-27205/ SUSE CVE CVE-2026-27205 page openSUSE Tumbleweed python311-Flask-3.1.3-1.1 python311-Flask-doc-3.1.3-1.1 python312-Flask-3.1.3-1.1 python312-Flask-doc-3.1.3-1.1 python313-Flask-3.1.3-1.1 python313-Flask-doc-3.1.3-1.1 python311-Flask-3.1.3-1.1 as a component of openSUSE Tumbleweed python311-Flask-doc-3.1.3-1.1 as a component of openSUSE Tumbleweed python312-Flask-3.1.3-1.1 as a component of openSUSE Tumbleweed python312-Flask-doc-3.1.3-1.1 as a component of openSUSE Tumbleweed python313-Flask-3.1.3-1.1 as a component of openSUSE Tumbleweed python313-Flask-doc-3.1.3-1.1 as a component of openSUSE Tumbleweed Flask is a web server gateway interface (WSGI) web application framework. In versions 3.1.2 and below, when the session object is accessed, Flask should set the Vary: Cookie header., resulting in a Use of Cache Containing Sensitive Information vulnerability. The logic instructs caches not to cache the response, as it may contain information specific to a logged in user. This is handled in most cases, but some forms of access such as the Python in operator were overlooked. The severity and risk depend on the application being hosted behind a caching proxy that doesn't ignore responses with cookies, not setting a Cache-Control header to mark pages as private or non-cacheable, and accessing the session in a way that only touches keys without reading values or mutating the session. The issue has been fixed in version 3.1.3. CVE-2026-27205 openSUSE Tumbleweed:python311-Flask-3.1.3-1.1 openSUSE Tumbleweed:python311-Flask-doc-3.1.3-1.1 openSUSE Tumbleweed:python312-Flask-3.1.3-1.1 openSUSE Tumbleweed:python312-Flask-doc-3.1.3-1.1 openSUSE Tumbleweed:python313-Flask-3.1.3-1.1 openSUSE Tumbleweed:python313-Flask-doc-3.1.3-1.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2026-27205.html CVE-2026-27205 https://bugzilla.suse.com/1258700 SUSE Bug 1258700