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CVE-2024-6866

22
FAUCET Score

CVE-2024-6866 affects corydolphin/flask-cors versions up to 4.01, stemming from a case-insensitive path matching flaw in its CORS configuration. This vulnerability, rated 7.5 High, allows unauthorized origins to bypass intended access restrictions due to the incorrect application of a host-matching function to case-sensitive URL paths. The potential impact is significant, leading to unauthorized data exposure and leaks. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0.1CPE matchmatch criteria
cpe:2.3:a:flask-cors_project:flask-cors:4.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.64%
Probability of exploitation in next 30 days
EPSS Percentile
47.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0064 is in the 23rd percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: flask-corsFixed in: 6.0.0

Vendor Advisories (1)

pipGHSA-43qf-4rqw-9q2gmedium

Flask-CORS vulnerable to Improper Handling of Case Sensitivity

Mar 20, 2025

References

lists.debian.org / debian-lts-announce/2025/05/msg00049.html
huntr.com / bounties/808c11af-faee-43a8-824b-b5ab4f62b9e6
ExploitThird Party Advisory