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Splunk Enterprise CVE-2026-76347

| EUVDEUVD-2026-62912 MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-08-19 cisco GHSA-q6q4-g44p-g55f
5.4
CVSS 3.1 · Vendor: cisco
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Severity by source

Vendor (cisco) PRIMARY
5.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
vuln.today AI
5.4 MEDIUM

Network-accessible via report notifications; low-privilege account required; no user interaction; integrity and availability impacted but no confidentiality loss; scope unchanged within Splunk boundary.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (cisco).

CVSS VectorVendor: cisco

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Aug 19, 2026 - 22:59 vuln.today
Patch available
Aug 19, 2026 - 22:04 EUVD
CVE Published
Aug 19, 2026 - 21:34 nvd
MEDIUM 5.4

DescriptionCVE.org

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the "admin" or "power" Splunk roles could use Server-Side Request Forgery (SSRF) in report notifications to send system-authenticated requests to internal Splunk services, which could allow for changes to Search Head Cluster state and a denial of service. The vulnerability is possible because Splunk Secure Gateway does not validate report notification path values before it sends internal requests.

AnalysisAI

Server-Side Request Forgery in Splunk Enterprise and Splunk Secure Gateway allows low-privileged authenticated users to manipulate internal Splunk services via crafted report notification paths. Affected versions span Splunk Enterprise below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway below 3.10.9, 3.9.23, and 3.8.70. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privilege Splunk credentials
Delivery
Authenticate to Splunk web interface
Exploit
Craft report notification with malicious internal path value
Execution
Submit request to Splunk Secure Gateway
Persist
Gateway forwards system-authenticated request to internal service
Impact
Manipulate Search Head Cluster state or trigger denial of service

Vulnerability AssessmentAI

Exploitation Exploitation requires a valid Splunk account that does not hold the 'admin' or 'power' role - any standard low-privilege user account is sufficient. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 5.4 (Medium) reflects a network-accessible flaw requiring only low-privilege authentication (PR:L), with no user interaction needed, resulting in low-integrity and low-availability impacts. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A threat actor with a valid low-privilege Splunk account (e.g., a departing employee or a compromised internal credential) authenticates to Splunk and crafts a report notification request with a manipulated path value targeting an internal Splunk service endpoint. Splunk Secure Gateway forwards the request without path validation, presenting it to the internal service as a system-authenticated call. …
Remediation Upgrade Splunk Enterprise to version 10.4.2, 10.2.6, 10.0.9, or 9.4.14 or later (matching the installed major branch), and upgrade Splunk Secure Gateway to version 3.10.9, 3.9.23, or 3.8.70 or later. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-76347 vulnerability details – vuln.today

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