CVE-2024-6844 — MEDIUM (5.3)

Vulnerability Description

A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus function, which converts the '+' character to a space ' '. This behavior leads to incorrect path normalization, causing potential mismatches in CORS configuration. As a result, endpoints may not be matched correctly to their CORS settings, leading to unexpected CORS policy application. This can cause unauthorized cross-origin access or block valid requests, creating security vulnerabilities and usability issues.

CVSS Score

5.3

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Flask-Cors Project	Flask-Cors	4.0.1

Related Weaknesses (CWE)

CWE-346

References

https://huntr.com/bounties/731a6cd4-d05f-4fe6-8f5b-fe088d7b34e0ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2025/05/msg00049.html

FAQ

What is CVE-2024-6844?

CVE-2024-6844 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A vulnerability in corydolphin/flask-cors version 4.0.1 allows for inconsistent CORS matching due to the handling of the '+' character in URL paths. The request.path is passed through the unquote_plus...

How severe is CVE-2024-6844?

CVE-2024-6844 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2024-6844?

Check the references section above for vendor advisories and patch information. Affected products include: Flask-Cors Project Flask-Cors.