CVE-2020-25032
Publication date 31 August 2020
Last updated 25 August 2025
Ubuntu priority
Description
An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| python-flask-cors | ||
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Fixed 3.0.8-2ubuntu0.1
|
|
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
Related Ubuntu Security Notices (USN)
- USN-6019-1
- Flask-CORS vulnerability
- 13 April 2023