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CVE-2026-20256 Improper Input Validation through Protocol-Relative URL in Classic Dashboards in Splunk Enterprise

🗓️ 10 Jun 2026 17:15:55Reported by ciscoType 
cvelist
 cvelist
🔗 www.cve.org👁 43 Views

Low-privilege user can exfiltrate data via protocol relative links in Splunk classic dashboards, bypassing external links checks.

Related
Affected
Refs
[
  {
    "product": "Splunk Enterprise",
    "vendor": "Splunk",
    "versions": [
      {
        "version": "10.2",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "10.2.4"
      },
      {
        "version": "10.0",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "10.0.7"
      },
      {
        "version": "9.4",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "9.4.12"
      },
      {
        "version": "9.3",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "9.3.13"
      }
    ]
  },
  {
    "product": "Splunk Cloud Platform",
    "vendor": "Splunk",
    "versions": [
      {
        "version": "10.3.2512",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "10.3.2512.13"
      },
      {
        "version": "10.2.2510",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "10.2.2510.15"
      },
      {
        "version": "10.1.2507",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "10.1.2507.23"
      },
      {
        "version": "9.3.2411",
        "status": "affected",
        "versionType": "custom",
        "lessThan": "9.3.2411.132"
      }
    ]
  }
]

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