What’s Vulnerable › Vulnerabilities

CVE-2023-32708: HTTP Response Splitting via the ‘rest’ SPL Command

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-01 · updated 2026-06-17
• Weakness: CWE-113

Description

In Splunk Enterprise versions below 9.0.5, 8.2.11, and 8.1.14, and Splunk Cloud Platform versions below 9.0.2303.100, a low-privileged user can trigger an HTTP response splitting vulnerability with the ‘rest’ SPL command that lets them potentially access other REST endpoints in the system arbitrarily.

Affected products

• Splunk Enterprise: from 8.1.0 before 8.1.14; from 8.2.0 before 8.2.11; from 9.0.0 before 9.0.5 — fixed in 8.1.14, 8.2.11, 9.0.5
• Splunk Cloud Platform: before 9.0.2303.100 — fixed in 9.0.2303.100

How to fix

Upgrade to a fixed version: Splunk Enterprise 8.1.14, 8.2.11, 9.0.5; Splunk Cloud Platform 9.0.2303.100. Check the vendor advisory for mitigations.

References

• https://advisory.splunk.com/advisories/SVD-2023-0603
• https://research.splunk.com/application/e615a0e1-a1b2-4196-9865-8aa646e1708c/
• https://advisory.splunk.com/advisories/SVD-2023-0603
• https://research.splunk.com/application/e615a0e1-a1b2-4196-9865-8aa646e1708c/

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