What’s Vulnerable › Vulnerabilities

CVE-2024-6221: Improper Access Control in corydolphin/flask-cors

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-08-18 · updated 2026-06-17
• Weakness: CWE-284

Description

A vulnerability in corydolphin/flask-cors version 4.0.1 allows the `Access-Control-Allow-Private-Network` CORS header to be set to true by default. This behavior can expose private network resources to unauthorized external access, leading to significant security risks such as data breaches, unauthorized access to sensitive information, and potential network intrusions.

Affected products

• corydolphin Flask-Cors: 4.0.1

References

• https://github.com/corydolphin/flask-cors/commit/03aa3f8e2256437f7bad96422a747b98ab5e31bf
• https://huntr.com/bounties/a42935fc-6f57-4818-bca4-3d528235df4d

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