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Weakness (CWE)

CWE-539: Use of Persistent Cookies Containing Sensitive Information

Variant Incomplete

The web application uses persistent cookies, but the cookies contain sensitive information.

How to prevent it (1 mitigation)

  1. Architecture and Design

    Do not store sensitive information in persistent cookies.

Source: MITRE CWE-539

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  • High 7.5
    CVE-2023-30861 Public exploit

    Flask vulnerable to possible disclosure of permanent session cookie due to missing Vary: Cookie header

    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` he…

    pallets flask flask flask Debian Ubuntu PyPI