SB2026031320 - Information disclosure in Splunk Enterprise

Description

This security bulletin contains information about 2 vulnerabilities.

1) Inclusion of sensitive information in log files (CVE-ID: CVE-2026-20165)

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

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

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to the MongoClient logging channel stores sensitive information into log files. A remote user can retrieve sensitive information by inspecting the job’s search log.

2) Improper access control (CVE-ID: CVE-2026-20164)

CWE-ID: CWE-284 - Improper Access Control

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

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to improper access restrictions. A remote user can access the "/splunkd/__raw/servicesNS/-/-/configs/conf-passwords" REST API endpoint, which exposes the hashed or plaintext password values that are stored in the passwords.conf configuration file

Remediation

Install update from vendor's website.

References

• https://advisory.splunk.com/advisories/SVD-2026-0304
• https://advisory.splunk.com/advisories/SVD-2026-0303