What is CVE-2021-32609?

CVE-2021-32609 is a medium-severity vulnerability in Apache Superset, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-10-18.

How severe is CVE-2021-32609?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Apache Superset

CVE-2021-32609

Apache Superset up to and including 1.1 does not sanitize titles correctly on the Explore page. This allows an attacker with Explore access to save a chart with a malicious title, injecting html (including scripts) into the page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-10-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.017 (76.4th percentile), scored 2026-10-22.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Apache Superset
Apache Software Foundation Superset — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

lists.apache.org/thread.html/r2c09254e98b4f8b3deb422762bd0e2aa6d743b72d96c2f90c… (Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2021-32609?: CVE-2021-32609 is a medium-severity vulnerability in Apache Superset, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-10-18.
How severe is CVE-2021-32609?: Medium severity. CVSS v3 base score is 5.4 out of 10.