CVE-2026-32773 PUBLISHED

Apache Spark: XSS Vulnerability in Spark Web 3.5.4

Assigner: apache
Reserved: 13.03.2026 Published: 02.09.2026 Updated: 02.09.2026

There is a lack of XSS escaping in the Spark History Server prior to 3.5.8 which allows a malicious Spark job to generate arbitrary unescaped frontend code which could lead to a minimal privilege escalation in browser. Users are encouraged to upgrade to Spark 3.5.8 or later.

This CVE is marked as "low" since the path to exploit requires both relatively high permissions (ability to launch a Spark job) and requires tricking a user with higher permissions to log in and visit the Spark history web page.

Users are encouraged to upgrade their Spark history servers to Spark 3.5.8 or later.

Product Status

Vendor Apache Software Foundation
Product Apache Spark
Versions Default: unaffected
  • affected from 3.0.0 to 3.5.8 (excl.)

Credits

  • Yann Gourio finder

References

Problem Types

  • CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) CWE