ALAS2023-2023-183

Flask is a lightweight WSGI web application framework. When all of the following conditions are met, a response containing data intended for one client may be cached and subsequently sent by the proxy to other clients. If the proxy also caches `Set-Cookie` headers, it may send one client's `session` cookie to other clients. The severity depends on the application's use of the session and the proxy's behavior regarding cookies. This happens because vulnerable versions of Flask only set the `Vary: Cookie` header when the session is accessed or modified, not when it is refreshed (re-sent to update the expiration) without being accessed or modified. This issue has been fixed in versions 2.3.2 and 2.2.5. (CVE-2023-30861)

noarch:
    python-flask-doc-1.1.2-5.amzn2023.0.3.noarch
    python3-flask-1.1.2-5.amzn2023.0.3.noarch

src:
    python-flask-1.1.2-5.amzn2023.0.3.src