Open Redirect in Dpgaspar Flask-Appbuilder
CVE-2021-32805
Flask-AppBuilder is an application development framework, built on top of Flask. In affected versions if using Flask-AppBuilder OAuth, an attacker can share a carefully crafted URL with a trusted domain for an application built with Flask-AppBuilder, this URL can redirect a user to a malicious site. This is an open redirect vulnerability. To resolve this issue upgrade to Flask-AppBuilder 3.2.2 or above. If upgrading is infeasible users may filter HTTP traffic containing `?next={next-site}` where the `next-site` domain is different from the application you are protecting as a workaround.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Dpgaspar Flask-Appbuilder — versions < 3.3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-624f-cqvr-3qw4 (Third Party Advisory)
- github.com/dpgaspar/Flask-AppBuilder/commit/6af28521589599b1dbafd6313256229ee9a… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-32805?
- CVE-2021-32805 is a high-severity vulnerability in Dpgaspar Flask-Appbuilder, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 7.2/10. Published 2021-09-08.
- How severe is CVE-2021-32805?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2021-32805 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.