CVE-2026-76261 (GCVE-0-2026-76261)

Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-26 19:52
VLAI
Title
Insecure Default Access Control List through the REST API 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 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the "admin" or "power" Splunk roles could read Spacebridge asymmetric private keys, which are secrets that compromise affected Spacebridge private-key material stored in the app collection, through the Splunk Secure Gateway App Key Value Store Representational State Transfer (REST) API. The vulnerability is possible on instances upgraded from older Splunk Secure Gateway deployments when the private-key migration remains incomplete, leaving key material in a collection with an insecure default access control list.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 19:43 UTC
CWE
  • CWE-732 - The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 442 records in the last 180 days details
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 , < 3.10.9 (custom)
Affected: 3.9 , < 3.9.23 (custom)
Affected: 3.8 , < 3.8.70 (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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Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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

Author Source Type Date Other

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.