CVE-2021-27907 Apache Superset stored XSS on Dashboard markdown
A malicious user can inject JavaScript into Superset dashboards via Markdown components, leading to stored XSS and potential account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-27907?
CVE-2021-27907 is a medium-severity cross-site scripting vulnerability in Apache Superset, published on 5 Mar 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Apache Superset up to and including 0.38.0 allowed the creation of a Markdown component on a Dashboard page for describing chart's related information. Abusing this functionality, a malicious user could inject javascript code executing unwanted action in the context of the user's browser. The javascript code will be automatically executed (Stored XSS) when a legitimate user surfs on the dashboard page. The vulnerability is exploitable creating a “div” section and embedding in it a “svg” element with javascript code.
Weakness: CWE-79
Which versions are affected by CVE-2021-27907?
4 open source packages ship an affected version, including apache-superset and superset. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache-superset PyPI | All versions | 0.38.1 |
apache-superset PyPI | All versions | 0.38.1 |
apache-superset PyPI | All versions | 0.38.1 |
superset Bitnami | All versions | 0.38.1 |
Products include Apache Superset.
How do I fix CVE-2021-27907?
Upgrade apache-superset to 0.38.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-27907 being exploited?
There is no known exploitation of CVE-2021-27907 in the wild and no public exploit code.
Other vulnerabilities in Apache Superset
- CVE-2023-27524 Apache Superset Insecure Default Initialization of Resource
- CVE-2022-27479 SQL injection vulnerability in chart data API
- CVE-2018-8021 Deserialization of Untrusted Data in superset
- CVE-2023-49657 Apache Superset: Stored XSS in Dashboard Title and Chart Title
- CVE-2022-43719 Apache Superset: Cross Site Request Forgery (CSRF) on accept, request access API
Sources
Also known as BIT-superset-2021-27907, GHSA-w358-rj93-r5qv, PYSEC-2021-127.