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CVE-2024-6221

23
FAUCET Score

CVE-2024-6221 is a high-severity vulnerability affecting corydolphin/flask-cors version 4.0.1, where the Access-Control-Allow-Private-Network CORS header is set to true by default. This misconfiguration allows external access to private network resources, posing risks of data breaches and unauthorized access. With a CVSS score of 7.5, the vulnerability is easily exploitable over the network with low complexity and no user interaction, potentially leading to significant information disclosure. 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:corydolphin:flask-cors:4.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 25th 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

No media coverage found for this CVE.

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: 4.0.2

Vendor Advisories (1)

pipGHSA-hxwh-jpp2-84pmhigh

Flask-CORS allows the `Access-Control-Allow-Private-Network` CORS header to be set to true by default

Aug 18, 2024

References

github.com / corydolphin/flask-cors/commit/03aa3f8e2256437f7bad96422a747b98ab5e31bf
huntr.com / bounties/a42935fc-6f57-4818-bca4-3d528235df4d
ExploitThird Party Advisory