| Name | CVE-2020-25032 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4775-1 |
| Debian Bugs | 969362 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python-flask-cors (PTS) | buster, buster (security) | 3.0.7-1+deb10u1 | fixed |
| bullseye | 3.0.9-2 | fixed |
| bookworm | 3.0.10-2 | fixed |
| sid, trixie | 4.0.0-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/corydolphin/flask-cors/commit/67c4b2cc98ae87cf1fa7df4f97fd81b40c79b895