Log Integrity Vulnerability in Splunk Enterprise and Cloud Products
CVE-2025-20384

5.3MEDIUM

Key Information:

Vendor

Splunk
Status
Splunk Enterprise
Splunk Cloud Platform
Vendor
CVE Published:
3 December 2025

What is CVE-2025-20384?

In Splunk Enterprise and Splunk Cloud, an unauthenticated attacker can exploit improper validation at the /en-US/static/ web endpoint to inject ANSI escape codes into log files. This vulnerability can lead to the poisoning, forging, or obfuscation of sensitive log data through specially crafted HTTP requests, severely impacting the integrity of logs and undermining detection capabilities.

Affected Version(s)

Splunk Cloud Platform 10.1.2507 < 10.1.2507.4

Splunk Cloud Platform 10.0.2503 < 10.0.2503.6

Splunk Cloud Platform 9.3.2411 < 9.3.2411.117

References

https://advisory.splunk.com/advisories/SVD-2025-1203

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

STĂ–K / Fredrik Alexandersson
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