Vulnerability Monitor

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CVE-2026-20258


In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.11, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could store a malicious script in a classic dashboard HTML panel, causing unauthorized JavaScript code to execute in the browser of another user. The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.1, indicating it can be exploited remotely over the network but requires specific conditions to be met though user interaction is required requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 2 products from splunk, from splunk organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2026-06-10T18:16:41.377

Last Modified

2026-06-17T10:17:20.783

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.1 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-79

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application splunk splunk < 9.3.13 Yes
Application splunk splunk < 9.4.12 Yes
Application splunk splunk < 10.0.7 Yes
Application splunk splunk < 10.2.4 Yes
Application splunk splunk_cloud_platform < 9.3.2411.132 Yes
Application splunk splunk_cloud_platform < 10.1.2507.23 Yes
Application splunk splunk_cloud_platform < 10.2.2510.15 Yes
Application splunk splunk_cloud_platform < 10.3.2512.11 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For splunk's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.