Medium (5.3) in apache zeppelin. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in org.apache.zeppelin:zeppelin-shell 0.12.0.
Missing Origin Validation in WebSockets vulnerability in Apache Zeppelin.
The attacker could access the Zeppelin server from another origin without any restriction, and get internal information about paragraphs.
This issue affects Apache Zeppelin: from 0.11.1 before 0.12.0.
Users are recommended to upgrade to version 0.12.0, which fixes the issue.
Severity
CVSS 3.1
5.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)