CVE-2026-20256

🗓️ 10 Jun 2026 17:15:55Reported by ciscoType

Low-privilege user can exfiltrate data via protocol relative url in classic dashboards, bypassing checks and warnings.

Reporter	Title	Published	Views	Family All 8
Circl	CVE-2026-20256	11 Jun 202618:00	–	circl
CNNVD	Splunk Enterprise 输入验证错误漏洞	10 Jun 202600:00	–	cnnvd
Cvelist	CVE-2026-20256 Improper Input Validation through Protocol-Relative URL in Classic Dashboards in Splunk Enterprise	10 Jun 202617:15	–	cvelist
EUVD	EUVD-2026-36080	10 Jun 202617:15	–	euvd
NCSC	Vulnerabilities in Splunk Enterprise and Splunk Cloud Platform	19 Jun 202612:42	–	ncsc
NVD	CVE-2026-20256	10 Jun 202618:16	–	nvd
Positive Technologies	PT-2026-48496	10 Jun 202600:00	–	ptsecurity
Tenable Nessus	Splunk Enterprise 9.3.0 < 9.3.13, 9.4.0 < 9.4.12, 10.0.0 < 10.0.7, 10.2.0 < 10.2.4 (SVD-2026-0606)	10 Jun 202600:00	–	nessus

NVD

Node

splunk splunkRange9.3.0–9.3.13enterprise

splunk splunkRange9.4.0–9.4.12enterprise

splunk splunkRange10.0.0–10.0.7enterprise

splunk splunkRange10.2.0–10.2.4enterprise

Node

splunk splunk_cloud_platformRange9.3.2411–9.3.2411.132

splunk splunk_cloud_platformRange10.1.2507–10.1.2507.23

splunk splunk_cloud_platformRange10.2.2510–10.2.2510.15

splunk splunk_cloud_platformRange10.3.2512–10.3.2512.13

[
  {
    "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"
      }
    ]
  }
]

Source	Link
advisory	www.advisory.splunk.com/advisories/SVD-2026-0606

17 Jun 2026 10:17Current

5.4Medium risk

Vulners AI Score5.4

CVSS 3.15.7

EPSS0.00252

CWE-20