Auth bypass in Dpgaspar Flask-Appbuilder
CVE-2021-41265
Flask-AppBuilder is a development framework built on top of Flask. Verions prior to 3.3.4 contain an improper authentication vulnerability in the REST API. The issue allows for a malicious actor with a carefully crafted request to successfully authenticate and gain access to existing protected REST API endpoints. This only affects non database authentication types and new REST API endpoints. Users should upgrade to Flask-AppBuilder 3.3.4 to receive a patch.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.013 (69.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: +0.000
Affected products
- Dpgaspar Flask-Appbuilder — versions < 3.3.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-m3rf-7m4w-r66q (Third Party Advisory)
- github.com/dpgaspar/Flask-AppBuilder/commit/eba517aab121afa3f3f2edb011ec6bc4efd… (Patch, Third Party Advisory)
- github.com/dpgaspar/Flask-AppBuilder/releases/tag/v3.3.4 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-41265?
- CVE-2021-41265 is a high-severity vulnerability in Dpgaspar Flask-Appbuilder, classified under Improper Authentication. CVSS score: 8.1/10. Published 2021-12-09.
- How severe is CVE-2021-41265?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2021-41265 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.