High [CVE-2026-20296] SPL Command Safeguards Bypass through Cross-Site Request Forgery (CSRF) in Deployment Server in Splunk Enterprise
This high-severity Splunk advisory covers CVE-2026-20296 affecting Splunk Enterprise, Splunk Cloud Platform.
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Summary
In Splunk Enterprise versions below 10.4.1, 10.2.5, 10.0.8, and 9.4.13, and Splunk Cloud Platform versions below 10.5.2605.0, 10.4.2604.7, 10.3.2512.16, 10.2.2510.18, and 10.1.2507.24, an attacker could trick a user that holds a role with the `list_deployment_server` capability into running arbitrary Search Processing Language (SPL) searches on their behalf as `splunk-system-user`, allowing for access to stored credentials and indexed data.
The vulnerability is possible because Deployment Server endpoints in Splunk Web do not validate Cross-Site Request Forgery (CSRF) tokens on GET requests, and caller-supplied input is not correctly neutralized before it is placed into an SPL search.
- Splunk Enterprise 10.4 before 10.4.1
- Splunk Enterprise 10.2 before 10.2.5
- Splunk Enterprise 10.0 before 10.0.8
- Splunk Enterprise 9.4 before 9.4.13
- Splunk Cloud Platform 10.5.2605 before 10.5.2605.0
- Splunk Cloud Platform 10.4.2604 before 10.4.2604.7
- Splunk Cloud Platform 10.3.2512 before 10.3.2512.16
- Splunk Cloud Platform 10.2.2510 before 10.2.2510.18
- Splunk Cloud Platform 10.1.2507 before 10.1.2507.24
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- 10.4.1
- 10.2.5
- 10.0.8
- 9.4.13
- 10.5.2605.0
- 10.4.2604.7
- 10.3.2512.16
- 10.2.2510.18
- 10.1.2507.24
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 10.4.1, 10.2.5, 10.0.8, 9.4.13, 10.5.2605.0, 10.4.2604.7. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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