pallets Flask Vulnerabilities

Pallets Flask vulnerabilities.

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21 February 2026

Use of Cache Containing Sensitive Information in Flask by Pallets
CVE-2026-27205
PalletsFlask2.3LOW

13 May 2025

Flask Web Application Framework Vulnerability in Key Configuration
CVE-2025-47278
PalletsFlask1.8LOW

2 May 2023

Flask vulnerable to possible disclosure of permanent session cookie due to missing Vary: Cookie header
CVE-2023-30861
PalletsFlask👾🟡7.5HIGH

17 July 2019

Denial of Service in Flask by Pallets Project
CVE-2019-1010083
The Pallets ProjectFlask7.5HIGH