EUVD-2026-63127
GHSA-xpjr-gq95-5rcc
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Phishing-dependent CSRF requires no attacker privileges (PR:N) but AC:H for victim coordination; C:H reflects full credential and data exposure.
Primary rating from Vendor (cisco).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionNVD
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user could cause an authenticated user to run arbitrary Search Processing Language (SPL) searches on their behalf through the Event Type Builder. This could expose all relevant data and stored credentials. The vulnerability is possible when the Event Type Builder accepts cross-site request input and retains SPL-affecting values while building sample event searches. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The unauthenticated user should not be able to exploit the vulnerability at will. For more information see Automatically find and build event types (https://help.splunk.com/en/splunk-enterprise/manage-knowledge-objects/knowledge-management-manual/9.0/event-types/automatically-find-and-build-event-types) in the Splunk documentation.
AnalysisAI
Cross-site request forgery combined with SPL injection in Splunk Enterprise's Event Type Builder allows an unauthenticated attacker to cause an authenticated user to execute arbitrary Search Processing Language queries under the victim's session context. Affected release branches span versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, covering multiple concurrent support tracks. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target is actively authenticated to a vulnerable Splunk Enterprise version (below 10.4.2, 10.2.6, 10.0.9, or 9.4.14) at the time of the attack. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.9 medium score accurately reflects the meaningful exploitation barriers: AC:H captures the dependency on a coordinated phishing campaign, and UI:R confirms no automated or mass-exploitation path exists. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker targeting a Splunk-using organization crafts a malicious web page containing a silent cross-origin HTTP request to the victim's Splunk instance, embedding attacker-controlled SPL values into the Event Type Builder parameters. The attacker sends a phishing email to a known Splunk administrator; when the victim opens the link while authenticated to Splunk, their browser automatically submits the cross-site request and Splunk executes the injected SPL search under the victim's full session permissions, potentially returning sensitive log data or stored Splunk credentials to an attacker-controlled endpoint. … |
| Remediation | Upgrade Splunk Enterprise to the patched releases: 10.4.2, 10.2.6, 10.0.9, or 9.4.14, depending on the deployed branch, as documented in SVD-2026-0801 at https://advisory.splunk.com/advisories/SVD-2026-0801. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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