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CVE-2026-20252: Server-Side Request Forgery (SSRF) through Dashboard Studio PDF Export in Splunk Enterprise

• Severity: high (CVSS 7.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-10 · updated 2026-06-17
• Weakness: CWE-918

Description

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.4.2604.3, 10.3.2512.12, 10.2.2510.14, 10.1.2507.22, and 9.3.2411.132, a low-privileged user that does not hold the "admin" or "power" Splunk roles could send server-side requests to arbitrary internal destinations through the Dashboard Studio PDF export feature. The vulnerability exists because the trusted-domain validation uses a prefix match that can be bypassed with attacker-controlled subdomains (for example, docs.splunk.com.evil.com), and because the PDF export service follows HTTP redirects automatically without re-validating each redirect target against the allowlist.

Affected products

• Splunk Enterprise: from 9.3.0 before 9.3.13; from 9.4.0 before 9.4.12; from 10.0.0 before 10.0.7; from 10.2.0 before 10.2.4 — fixed in 10.0.7, 10.2.4, 9.3.13, 9.4.12
• Splunk Cloud Platform: from 9.3.2411 before 9.3.2411.132; from 10.1.2507 before 10.1.2507.22; from 10.2.2510 before 10.2.2510.14; from 10.3.2512 before 10.3.2512.12; from 10.4.2604 before 10.4.2604.3 — fixed in 10.1.2507.22, 10.2.2510.14, 10.3.2512.12, 10.4.2604.3, 9.3.2411.132

How to fix

Upgrade to a fixed version: Splunk Enterprise 10.0.7, 10.2.4, 9.3.13, 9.4.12; Splunk Cloud Platform 10.1.2507.22, 10.2.2510.14, 10.3.2512.12, 10.4.2604.3. Check the vendor advisory for mitigations.

References

• https://advisory.splunk.com/advisories/SVD-2026-0602

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