Update dependency flask to v3.1.3 [SECURITY]#567
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This PR contains the following updates:
3.1.2→3.1.3GitHub Vulnerability Alerts
CVE-2026-27205
When the
sessionobject is accessed, Flask should set theVary: Cookieheader. This 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 Pythoninoperator were overlooked.The severity depends on the application's use of the session, and the cache's behavior regarding cookies. The risk depends on all these conditions being met.
Cache-Controlheader to indicate that a page is private or should not be cached.Release Notes
pallets/flask (flask)
v3.1.3Compare Source
Released 2026-02-18
but not the values, such as
inandlen. :ghsa:68rp-wp8r-4726Configuration
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