What’s Vulnerable › Vulnerabilities
CVE-2026-76267: Log Injection through the REST API in Splunk App for Splunk O11y Cloud
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-07 · updated 2026-10-14
- Weakness: CWE-117
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.
Affected products
- Splunk Enterprise: from 10.0.0 before 10.0.10; from 10.2.0 before 10.2.7; from 10.4.0 before 10.4.3 — fixed in 10.0.10, 10.2.7, 10.4.3
How to fix
Upgrade to a fixed version: Splunk Enterprise 10.0.10, 10.2.7, 10.4.3. Check the vendor advisory for mitigations.
References
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