CVE-2024-6866

Publication date 20 March 2025

Last updated 3 July 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

corydolphin/flask-cors version 4.01 contains a vulnerability where the request path matching is case-insensitive due to the use of the `try_match` function, which is originally intended for matching hosts. This results in a mismatch because paths in URLs are case-sensitive, but the regex matching treats them as case-insensitive. This misconfiguration can lead to significant security vulnerabilities, allowing unauthorized origins to access paths meant to be restricted, resulting in data exposure and potential data leaks.

Status

Package Ubuntu Release Status
python-flask-cors 25.04 plucky
Fixed 5.0.0-1ubuntu0.1
24.10 oracular
Fixed 4.0.1-1ubuntu0.1
24.04 LTS noble
Fixed 4.0.0-1ubuntu0.1~esm1
22.04 LTS jammy
Fixed 3.0.9-2ubuntu0.1
20.04 LTS focal
Fixed 3.0.8-2ubuntu0.1+esm1

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
python-flask-cors

Severity score breakdown

Parameter Value
Base score 5.3 · Medium
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-7612-1
    • Flask-CORS vulnerabilities
    • 2 July 2025

Other references