5.7

CVE-2026-20257

Improper Input Validation through Classic Dashboard CSS 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 craft a classic dashboard that exfiltrates sensitive data from the browser of a higher-privileged user who views it.  

The exfiltration is possible because classic dashboard panels do not fully validate style attribute values, which can allow for requests to reach external domains outside the configured Trusted Domains List.  

The vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.
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 0.2% 0.096
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-2026-0607
Vendor Advisory