Splunk MCP Server App up to 1.2.0 Credential Management input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Splunk MCP Server App up to 1.2.0. This affects an unknown function of the component Credential Management Component. Such manipulation leads to input validation. This vulnerability is documented as CVE-2026-76404. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Splunk MCP Server App up to 1.2.0 and classified as problematic. Affected by this issue is an unknown code block of the component Credential Management Component. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In Splunk MCP Server app versions below 1.2.1, a user who holds the "admin" Splunk role could execute arbitrary commands on the underlying operating system. The vulnerability is possible because of missing input validation in the app's credential management component, which deserializes stored data without checking whether the content is of the expected type.

The advisory is available at advisory.splunk.com. This vulnerability is handled as CVE-2026-76404 since 08/19/2026. The exploitation is known to be easy. The attack may be launched remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 1.2.1 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.1
CNA Vector (cisco): 🔒

CVSSv2info

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

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

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: MCP Server App 1.2.1

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-2026-76404 (🔒)
GCVE (CVE): GCVE-0-2026-76404
GCVE (VulDB): GCVE-100-393566

Entryinfo

Created: 08/20/2026 00:28
Changes: 08/20/2026 00:28 (64)
Complete: 🔍
Cache ID: 216::103

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