Palletsprojects Flask
By the Year
In 2024 there have been 0 vulnerabilities in Palletsprojects Flask . Last year Flask had 1 security vulnerability published. Right now, Flask is on track to have less security vulnerabilities in 2024 than it did last year.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2024 | 0 | 0.00 |
| 2023 | 1 | 7.50 |
| 2022 | 0 | 0.00 |
| 2021 | 0 | 0.00 |
| 2020 | 0 | 0.00 |
| 2019 | 1 | 7.50 |
| 2018 | 1 | 7.50 |
It may take a day or so for new Flask vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Palletsprojects Flask Security Vulnerabilities
Flask is a lightweight WSGI web application framework
CVE-2023-30861
7.5 - High
- May 02, 2023
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. The risk depends on all these conditions being met. 1. The application must be hosted behind a caching proxy that does not strip cookies or ignore responses with cookies. 2. The application sets `session.permanent = True` 3. The application does not access or modify the session at any point during a request. 4. `SESSION_REFRESH_EACH_REQUEST` enabled (the default). 5. The application does not set a `Cache-Control` header to indicate that a page is private or should not be cached. 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.
Use of Persistent Cookies Containing Sensitive Information
The Pallets Project Flask before 1.0 is affected by: unexpected memory usage
CVE-2019-1010083
7.5 - High
- July 17, 2019
The Pallets Project Flask before 1.0 is affected by: unexpected memory usage. The impact is: denial of service. The attack vector is: crafted encoded JSON data. The fixed version is: 1. NOTE: this may overlap CVE-2018-1000656.
The Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask
CVE-2018-1000656
7.5 - High
- August 20, 2018
The Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask that can result in Large amount of memory usage possibly leading to denial of service. This attack appear to be exploitable via Attacker provides JSON data in incorrect encoding. This vulnerability appears to have been fixed in 0.12.3. NOTE: this may overlap CVE-2019-1010083.
Improper Input Validation
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