Flask-CORS improper regex path matching vulnerability

中 5.3CVE-2024-6839 · GHSA-7rxf-gvfg-47g4 · PYSEC-2026-1384 · 20/03/2025 公開 · 17/06/2026 更新

要点

CVE-2024-6839 は flask-cors, flask-cors (flask-cors project) に影響する深刻度「中」 (CVSS 5.3) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.74%（全脆弱性の 54.6% より高い）。
対処：6.0.0 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
flask-cors PyPI	`< 6.0.0`	`6.0.0`
flask-cors flask-cors_project	`= 4.0.1`	修正版なし

概要

corydolphin/flask-cors version 5.0.1 contains an improper regex path matching vulnerability. The plugin prioritizes longer regex patterns over more specific ones when matching paths, which can lead to less restrictive CORS policies being applied to sensitive endpoints. This mismatch in regex pattern priority allows unauthorized cross-origin access to sensitive data or functionality, potentially exposing confidential information and increasing the risk of unauthorized actions by malicious actors.

NVD の説明

corydolphin/flask-cors version 4.0.1 contains an improper regex path matching vulnerability. The plugin prioritizes longer regex patterns over more specific ones when matching paths, which can lead to less restrictive CORS policies being applied to sensitive endpoints. This mismatch in regex pattern priority allows unauthorized cross-origin access to sensitive data or functionality, potentially exposing confidential information and increasing the risk of unauthorized actions by malicious actors.