SB2026041761 - Information disclosure in Splunk MCP Server

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Main Vulnerability Database SB2026041761

SB2026041761 - Information disclosure in Splunk MCP Server

Published: April 17, 2026

Security Bulletin ID SB2026041761
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Inclusion of Sensitive Information in Log Files (CVE-ID: CVE-2026-20205)

CWE-ID: CWE-532 - Information Exposure Through Log Files

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to insertion of sensitive information into log files in the Splunk _internal index and log files when storing session and authorization tokens in clear text. A remote privileged user can read the exposed tokens to disclose sensitive information.

Exploitation requires access to the _internal index, local log files, or the mcp_tool_admin capability.


Remediation

Install update from vendor's website.

References