flask
PyPI4 known CVEs affecting this package
Aggregated from OSV, GitHub Security Advisories, NVD, and vendor advisories. Each CVE links to its full detail page with vendor advisories, patches, fixed versions, and remediation guidance.
CVEs affecting flaskpage 1 of 1
- CVE-2018-1000656HIGHCVSS 7.5EG 7.5✓ Fixed in 0.12.32018-08-20
vulnerable: 0.1 ... 0.9 (23 versions)
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…
- CVE-2019-1010083HIGHCVSS 7.5EG 7.5✓ Fixed in 1.02019-07-17
vulnerable: 0.1 ... 0.9 (26 versions)
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.
- CVE-2023-30861HIGHCVSS 7.5EG 7.5✓ Fixed in 2.3.22023-05-02
vulnerable: 0.1 ... 2.3.1 (53 versions)
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 ca…
- CVE-2025-47278LOWCVSS 1.8EG 0.0✓ Fixed in 3.1.12025-05-13
vulnerable: 3.1.0
Flask is a web server gateway interface (WSGI) web application framework. In Flask 3.1.0, the way fallback key configuration was handled resulted in the last fallback key being used for signing, rather than the current signing key. Signing…
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