Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1 Search Head Cluster denial of service

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.43

Summaryinfo

A vulnerability classified as problematic has been found in Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1. This affects an unknown function of the component Search Head Cluster. This manipulation causes denial of service. This vulnerability is handled as CVE-2026-76348. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Splunk Enterprise up to 9.4.13/10.0.8/10.2.5/10.4.1 and classified as problematic. Affected by this vulnerability is some unknown processing of the component Search Head Cluster. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect integrity, and availability. The summary by CVE is:

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, a user who holds a Splunk role that contains the high-privilege list_search_head_clustering capability could send a read request to Search Head Cluster member control endpoints and change cluster state, which could allow for a denial of service. The vulnerability is possible because the Search Head Cluster member control endpoints do not require a state-changing Hypertext Transfer Protocol (HTTP) request type before they apply read-only authorization.

It is possible to read the advisory at advisory.splunk.com. This vulnerability is known as CVE-2026-76348 since 08/19/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 9.4.14, 10.0.9, 10.2.6 or 10.4.2 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.8
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.8
CNA Vector (cisco): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Enterprise 9.4.14/10.0.9/10.2.6/10.4.2

Timelineinfo

08/19/2026 CVE reserved
08/19/2026 +0 days VulDB entry created
08/20/2026 +0 days Advisory disclosed
08/20/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: advisory.splunk.com
Status: Confirmed

CVE: CVE-2026-76348 (🔒)
GCVE (CVE): GCVE-0-2026-76348
GCVE (VulDB): GCVE-100-393511

Entryinfo

Created: 08/20/2026 00:08
Changes: 08/20/2026 00:08 (64)
Complete: 🔍
Cache ID: 216::103

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