CVE•Published 2026-09-02•Modified 2026-09-08•0 articles on news•5 live references•NVD data

CVE-2026-32773Apache · Spark

Vulnerability data via NVD (ingested)

CVSS v3.1

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS percentile

Exploit Prediction Scoring System · top 83% of all CVEs

Weaknesses (CWE)

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

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.

Timeline

Published 2026-09-02

Modified 2026-09-08

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag248 hosts

vuln:CVE-2026-32773

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Apache Spark"

All exposed Apache Spark instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Spark"

HTTP body or banner mentions "Spark" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-32773