What is CVE-2021-28656?

CVE-2021-28656 is a medium-severity vulnerability in Apache Zeppelin, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2024-04-09.

How severe is CVE-2021-28656?

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

CSRF in Apache Zeppelin

CVE-2021-28656

Cross-Site Request Forgery (CSRF) vulnerability in Credential page of Apache Zeppelin allows an attacker to submit malicious request. This issue affects Apache Zeppelin Apache Zeppelin version 0.9.0 and prior versions.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2024-04-09 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.005 (39.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Apache Zeppelin
Apache Software Foundation Zeppelin — versions 0

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

lists.apache.org/thread/dttzkkv4qyn1rq2fdv1r94otb1osxztc (vendor-advisory, Mailing List, Vendor Advisory)
www.openwall.com/lists/oss-security/2024/04/09/3 (Mailing List)

Frequently asked questions

What is CVE-2021-28656?: CVE-2021-28656 is a medium-severity vulnerability in Apache Zeppelin, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2024-04-09.
How severe is CVE-2021-28656?: Medium severity. CVSS v3 base score is 5.4 out of 10.