EUVD-2026-62911
GHSA-mhr2-9p67-2p55
Severity by source
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N
Scope changes because the payload executes in a different user's browser security context; AC:H reflects mandatory phishing dependency; PR:L reflects required 'power' role prerequisite.
Primary rating from Vendor (cisco).
CVSS VectorVendor: cisco
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N
Lifecycle Timeline
3DescriptionCVE.org
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who holds the "power" Splunk role could store a malicious script in dashboard sparkline format options and execute unauthorized JavaScript in the browser of another user who views the dashboard. If the other user holds the "admin" Splunk role, the script could access all relevant data available through Splunk Web and perform actions with that user's permissions. The vulnerability is possible because Splunk Web does not limit the permitted dashboard visualization options to safe presentation settings and does not escape tooltip values before rendering them. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The user who holds the "power" Splunk role should not be able to exploit the vulnerability at will. For more information see About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access) in the Splunk documentation.
AnalysisAI
Stored cross-site scripting in Splunk Enterprise allows a 'power' role user to embed malicious JavaScript within dashboard sparkline format options, which then executes in the browser of any user who views that dashboard. If the victim holds the 'admin' Splunk role, the attacker effectively gains access to all data accessible through Splunk Web and can perform actions at admin-level permissions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must already hold the Splunk 'power' role on the target Splunk Enterprise instance - this is not an unauthenticated or external network attack. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The official CVSS score of 5.4 (Medium) accurately captures the meaningful prerequisites: the attacker must already hold the 'power' Splunk role (PR:L) and must successfully phish a target user (UI:R, AC:H) to trigger payload execution. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Splunk Enterprise to one of the patched releases confirmed by Splunk's advisory SVD-2026-0801: version 10.4.2, 10.2.6, 10.0.9, or 9.4.14, depending on the active release branch. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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