5.7

CVE-2026-20256

Improper Input Validation through Protocol-Relative URL in Classic Dashboards in Splunk Enterprise

In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the 'admin' or 'power' Splunk roles could cause data exfiltration through classic dashboards by redirecting a victim to an external site using a protocol-relative URL in a drill-down link.<br><br>The vulnerability exists because the URL classifier in classic dashboards only recognizes `http://` and `https://` schemes when checking for external URLs. Protocol-relative URLs such as `//attacker.com` bypass this check entirely, and Splunk Web does not show the external-navigation warning dialog to the victim.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Splunk ≫ Splunk SwEditionenterprise Version >= 9.3.0 < 9.3.13
Splunk ≫ Splunk SwEditionenterprise Version >= 9.4.0 < 9.4.12
Splunk ≫ Splunk SwEditionenterprise Version >= 10.0.0 < 10.0.7
Splunk ≫ Splunk SwEditionenterprise Version >= 10.2.0 < 10.2.4
Splunk ≫ Splunk Cloud Platform Version >= 9.3.2411 < 9.3.2411.132
Splunk ≫ Splunk Cloud Platform Version >= 10.1.2507 < 10.1.2507.23
Splunk ≫ Splunk Cloud Platform Version >= 10.2.2510 < 10.2.2510.15
Splunk ≫ Splunk Cloud Platform Version >= 10.3.2512 < 10.3.2512.13
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.162
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
psirt@cisco.com 5.7 2.1 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

https://advisory.splunk.com/advisories/SVD-2026-0606
Vendor Advisory