SB20260721124 - Multiple vulnerabilities in Splunk Enterprise

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Main Vulnerability Database SB20260721124

SB20260721124 - Multiple vulnerabilities in Splunk Enterprise

Published: July 21, 2026

Security Bulletin ID SB20260721124
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Cross-site request forgery (CVE-ID: CVE-2026-20296)

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

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


The vulnerability allows a remote attacker to disclose sensitive information and execute arbitrary SPL searches on behalf of a victim user.

The vulnerability exists due to improper neutralization of special elements in Splunk Web Deployment Server endpoints when handling cross-site request forgery GET requests. A remote attacker can trick the victim into initiating a crafted browser request to disclose sensitive information and execute arbitrary SPL searches on behalf of a victim user.

User interaction is required, and the victim must hold a role with the list_deployment_server capability.


2) Path traversal (CVE-ID: CVE-2026-20297)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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


The vulnerability allows a remote user to write files outside the intended app directory.

The vulnerability exists due to path traversal in the App Install REST endpoint when processing a legitimate app installation through the explicit_appname parameter. A remote privileged user can supply a crafted app installation path to write files outside the intended app directory.

Exploitation requires a role that includes the edit_local_apps and install_apps capabilities, and file writes are limited to $SPLUNK_HOME/etc/ and its subdirectories.


3) Information disclosure (CVE-ID: CVE-2026-20298)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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 exposure of sensitive information in the /servicesNS/-/-/storage/passwords REST endpoint when accessing the endpoint through the |rest Search Processing Language command. A remote user can access the endpoint to disclose sensitive information.

The exposed data includes stored credential hashes in the encr_password field, and the issue affects users that do not hold the admin or power Splunk roles.


Remediation

Install update from vendor's website.

References