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
EPSS: 0.007 (49.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Dpgaspar Flask-appbuilder — versions < 3.3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
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.