GHSA-43qf-4rqw-9q2g

Suggest an improvement
Source
https://github.com/advisories/GHSA-43qf-4rqw-9q2g
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-43qf-4rqw-9q2g/GHSA-43qf-4rqw-9q2g.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-43qf-4rqw-9q2g
Aliases
Published
2025-03-20T12:32:45Z
Modified
2025-03-21T22:36:48.493292Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Flask-CORS vulnerable to Improper Handling of Case Sensitivity
Details

corydolphin/flask-cors version 4.0.1 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.

Database specific
{
    "nvd_published_at": "2025-03-20T10:15:34Z",
    "cwe_ids": [
        "CWE-178"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-21T22:16:04Z"
}
References

Affected packages

PyPI / flask-cors

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
4.0.1

Affected versions

0.*

0.0.0.dev3
0.0.0.dev4

1.*

1.0
1.1
1.1.1
1.1.2
1.1.3
1.2.0
1.2.1
1.3.0
1.3.1
1.4.0
1.5.0
1.6.0
1.6.1
1.7.0
1.7.1
1.7.2
1.7.3
1.7.4
1.8.0
1.8.1
1.9.0
1.10.0
1.10.1
1.10.2
1.10.3

2.*

2.0.0rc1
2.0.0
2.0.1
2.1.0
2.1.1
2.1.2
2.1.3

3.*

3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.6
3.0.7
3.0.8
3.0.9
3.0.10

4.*

4.0.0a0
4.0.0
4.0.1