SB2026090253 - Cross-site scripting in Apache Spark

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2026-32773)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

The vulnerability allows a remote user to escalate privileges in the browser.

The vulnerability exists due to cross-site scripting in the Spark History Server web interface when rendering job-supplied content. A remote user can submit a malicious Spark job containing unescaped frontend code to escalate privileges in the browser.

User interaction is required, as a higher-privileged user must log in and visit the Spark history web page.

Remediation

Install update from vendor's website.

References

• https://lists.apache.org/api/email.lua?id=g9d5pcp9fty5ph0g9x1w1lzm0rr06vzt
• https://issues.apache.org/jira/browse/SPARK-53747