Flask-AppBuilder Open Redirect vulnerability

中 6.1CVE-2021-32805 · GHSA-624f-cqvr-3qw4 · PYSEC-2021-359 · 08/09/2021 公開 · 17/06/2026 更新

要点

CVE-2021-32805 は flask-appbuilder, flask-appbuilder (dpgaspar) に影響する深刻度「中」 (CVSS 6.1) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.70%（全脆弱性の 53.2% より高い）。
対処：3.3.2 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
flask-appbuilder PyPI	`< 3.3.2`	`3.3.2`
flask-appbuilder dpgaspar	`< 3.3.2`	`3.3.2`

概要

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

NVD の説明

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.