CVE-2026-20252
Last modified
CVE-2026-20252 is a high-severity vulnerability rated 7.6/10 on the CVSS scale. 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.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Splunk | Splunk | >= 9.3.0, < 9.3.13 |
| Splunk | Splunk | >= 9.4.0, < 9.4.12 |
| Splunk | Splunk | >= 10.0.0, < 10.0.7 |
| Splunk | Splunk | >= 10.2.0, < 10.2.4 |
| Splunk | Splunk Cloud Platform | >= 9.3.2411, < 9.3.2411.132 |
| Splunk | Splunk Cloud Platform | >= 10.1.2507, < 10.1.2507.22 |
| Splunk | Splunk Cloud Platform | >= 10.2.2510, < 10.2.2510.14 |
| Splunk | Splunk Cloud Platform | >= 10.3.2512, < 10.3.2512.12 |
| Splunk | Splunk Cloud Platform | >= 10.4.2604, < 10.4.2604.3 |
References
- https://advisory.splunk.com/advisories/SVD-2026-0602Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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