CVE-2025-20384 Details
Description
In Splunk Enterprise versions below 10.0.1, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.4, 10.0.2503.6, and 9.3.2411.117.125, an unauthenticated attacker can inject American National Standards Institute (ANSI) escape codes into Splunk log files due to improper validation at the /en-US/static/ web endpoint. This may allow them to poison, forge, or obfuscate sensitive log data through specially crafted HTTP requests, potentially impacting log integrity and detection capabilities.
A vulnerability exists in Splunk Enterprise versions prior to 10.0.1, 9.4.6, 9.3.8, and 9.2.10, as well as in Splunk Cloud Platform versions prior to 10.1.2507.4, 10.0.2503.6, and 9.3.2411.117.125. This vulnerability allows an unauthenticated attacker to inject American National Standards Institute (ANSI) escape codes into Splunk log files. The issue arises from improper validation at the /en-US/static/ web endpoint. Exploitation of this vulnerability could lead to the poisoning, forging, or obfuscation of sensitive log data, thereby potentially compromising log integrity and detection capabilities.
Users of Splunk Enterprise should upgrade to versions 10.0.1, 9.4.6, 9.3.8, 9.2.10, or higher. For Splunk Cloud Platform, the provider is actively monitoring and patching instances. Additionally, turning off Splunk Web can mitigate the vulnerability. For more information on disabling Splunk Web, consult the Splunk Enterprise documentation on managing users and security.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Dec 3, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://advisory.splunk.com/advisories/SVD-2025-1203 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-117 | Improper Output Neutralization for Logs | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| splunk splunk | >= 9.2.0, < 9.2.10 >= 9.3.0, < 9.3.8 >= 9.4.0, < 9.4.6 10.0.0 |
CPE
Remediation
| |
| splunk splunk cloud platform | >= 9.3.2411, < 9.3.2411.117 >= 10.0.2503, < 10.0.2503.6 >= 10.1.2507, < 10.1.2507.4 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 25, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Dec 5, 2025 | Initial Analysis | [email protected] |
| Dec 3, 2025 | New CVE Received | [email protected] |