How severe is CVE-2024-6221?

CVE-2024-6221 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-6221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-6221?

CVE-2024-6221 affects Corydolphin Flask-cors. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-6221?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-6221 have an EU (EUVD) identifier?

Yes. CVE-2024-6221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0061.

When was CVE-2024-6221 published?

CVE-2024-6221 was published on 2024-08-18 and last updated on 2026-06-17.

CVE-2024-6221

CVE-2024-6221 is a high-severity vulnerability in Corydolphin Flask-cors with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0061
Weakness: CWE-284
Affected product: Corydolphin Flask-cors
Published: 2024-08-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2024-6221?: 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.
How severe is CVE-2024-6221?: CVE-2024-6221 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-6221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-6221?: CVE-2024-6221 affects Corydolphin Flask-cors. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-6221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-6221 have an EU (EUVD) identifier?: Yes. CVE-2024-6221 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0061.
When was CVE-2024-6221 published?: CVE-2024-6221 was published on 2024-08-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:corydolphin:flask-cors:4.0.1:*:*:*:*:*:*:*

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