CVE-2026-32773: CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in Apache Software Foundation Apache Spark
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.
CVE-2026-32773: CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in Apache Software Foundation Apache Spark
Description
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.
CVSS v3.1
Score 6.1medium
Affected software
pkg:maven/Apache Software Foundation/org.apache.spark:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-03-13T21:18:59.420Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a980390acd9273b492708ef
Added to database: 09/02/2026, 11:08:00 UTC
Last updated: 09/03/2026, 03:52:00 UTC
Views: 14
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