CVE-2026-20256 - CERT CVE
ID CVE-2026-20256
Sažetak 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.
Reference
CVSS
Base: 5.7
Impact: 3.6
Exploitability:2.1
Pristup
VektorSloženostAutentikacija
NETWORK LOW LOW
Impact
PovjerljivostCjelovitostDostupnost
HIGH NONE NONE
CVSS vektor CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Zadnje važnije ažuriranje 10-06-2026 - 18:36
Objavljeno 10-06-2026 - 18:16