Path Traversal in Flask-Cors Project
CVE-2020-25032
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 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.
EPSS exploit prediction
EPSS: 0.040 (90.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000
Affected products
- Flask-Cors Project
- Debian Linux — versions 10.0
- openSUSE Backports Sle — versions 15.0
- openSUSE Leap — versions 15.1, 15.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/corydolphin/flask-cors/releases/tag/3.0.9 (Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00028.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00032.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00039.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00048.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4775 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-25032?
- CVE-2020-25032 is a high-severity vulnerability in Flask-Cors Project, classified under Path Traversal. CVSS score: 7.5/10. Published 2020-08-31.
- How severe is CVE-2020-25032?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-25032 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.