Description
In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.

Splunk Enterprise versions 9.4.x are not affected.
Published: 2026-10-07
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

Upgrade Splunk Enterprise to versions 10.4.3, 10.2.7, 10.0.10, and 9.4.15, or higher.


Vendor Workaround

Turn off or remove the Splunk App for Splunk O11y Cloud. For more information see [Manage app and add-on objects](https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/meet-splunk-apps/manage-app-and-add-on-objects) in the Splunk documentation.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Thu, 08 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Splunk
Splunk splunk Enterprise
Vendors & Products Splunk
Splunk splunk Enterprise

Wed, 07 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
Description In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log. Splunk Enterprise versions 9.4.x are not affected.
Title Log Injection through the REST API in Splunk App for Splunk O11y Cloud
Weaknesses CWE-117
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}


Subscriptions

Splunk Splunk Enterprise
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-10-08T15:09:43.445Z

Reserved: 2026-08-19T12:02:03.620Z

Link: CVE-2026-76267

cve-icon Vulnrichment

Updated: 2026-10-08T15:09:39.891Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-07T21:17:17.467

Modified: 2026-10-08T20:08:45.857

Link: CVE-2026-76267

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T23:45:14Z

Weaknesses
  • CWE-117

    Improper Output Neutralization for Logs