CVE-2026-76257 (GCVE-0-2026-76257)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-19 21:34
VLAI
Title
Missing Authorization through REST API Endpoints in Splunk Secure Gateway
Summary
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.10, 3.9.24, and 3.8.71, a user who holds a Splunk role with permissions to list storage passwords but does not hold Splunk Secure Gateway administration privileges could access Mobile Device Management signing secrets that compromise all affected mobile-device enrollment trust through Splunk Secure Gateway. The vulnerability is possible because Splunk Secure Gateway Representational State Transfer (REST) API endpoints for deployment bundle, Security Assertion Markup Language setup, and companion app workflows do not require Splunk Secure Gateway administration privileges before processing requests.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-862 - The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
Assigner
References
Impacted products
Vendor Product Version CPE status
Splunk Splunk Enterprise Affected: 10.4 , < 10.4.2 (custom)
Affected: 10.2 , < 10.2.6 (custom)
Affected: 10.0 , < 10.0.9 (custom)
Affected: 9.4 , < 9.4.14 (custom)
guessed Create a notification for this product.
Splunk Splunk Secure Gateway Affected: 3.10 , < 3.10.10 (custom)
Affected: 3.9 , < 3.9.24 (custom)
Affected: 3.8 , < 3.8.71 (custom)
guessed Create a notification for this product.
Date Public
2026-08-19 00:00
Credits
Gabriel Nitu, Splunk
Show details on NVD website
To clipboard 

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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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