CVE-2021-32805
HIGH7.2EPSS 0.19%Flask-AppBuilder Open Redirect vulnerability
Published: 9/8/2021Modified: 3/13/2026
Description
### Impact 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 ### Patches Install Flask-AppBuilder 3.2.2 or above ### Workarounds Filter HTTP traffic containing `?next={next-site}` where the `next-site` domain is different from the application you are protecting
Affected packages (2)
- PyPI/flask-appbuilderfrom 0, < 3.3.2
- PyPI/flask-appbuilderfrom 0, < 6af28521589599b1dbafd6313256229ee9a4fa74 | from 0, < 3.3.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| osv | CVSS 3.1 | HIGH7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-32805
- PATCHhttps://github.com/dpgaspar/Flask-AppBuilder
- WEBhttps://github.com/dpgaspar/Flask-AppBuilder/commit/6af28521589599b1dbafd6313256229ee9a4fa74
- WEBhttps://github.com/dpgaspar/Flask-AppBuilder/releases/tag/v3.3.2
- WEBhttps://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-624f-cqvr-3qw4
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/flask-appbuilder/PYSEC-2021-359.yaml
- WEBhttps://pypi.org/project/Flask-AppBuilder