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CVE-2026-32773

Apache Spark: XSS Vulnerability in Spark Web 3.5.4

Published: Sep 2, 2026Updated: Sep 3, 2026 Sources: CVE List NVDCWE-80
6.1MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 82.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-80

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache SparkOn-premDatabase
Databases / data-warehouse-analytics

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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References

https://lists.apache.org/thread/k36prh3oxl1z6ov7w8rpmfnt07hmzw3v
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/09/01/4
openwall.com

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