CVE-2026-76262 Exposure of Sensitive Information to an Unauthorized Actor through the REST API in Splunk Enterprise
Unauthenticated attackers can read sensitive Prometheus metrics from the Edge Processor sidecar, exposing runtime and build metadata.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76262?
CVE-2026-76262 is a high-severity vulnerability in Splunk Splunk, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Splunk Enterprise 10.4 versions below 10.4.2, an unauthenticated user could read Prometheus service metrics from the Edge Processor SPL2 Preview sidecar, including service details that expose relevant runtime and build metadata for the sidecar. The vulnerability does not affect Splunk Enterprise versions below 10.4. The information disclosure is possible because the Prometheus metrics endpoint in the Edge Processor SPL2 Preview sidecar lacks authentication, which lets any client that can reach the sidecar retrieve the metrics without credentials. For more information see About Splunk sidecars (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/splunk-sidecars/about-splunk-sidecars) in the Splunk documentation.
Weakness: CWE-200
Which versions are affected by CVE-2026-76262?
It affects 1 product.
Products include Splunk Splunk.
How do I fix CVE-2026-76262?
No fix has been published for CVE-2026-76262 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76262 being exploited?
There is no known exploitation of CVE-2026-76262 in the wild and no public exploit code.
Other vulnerabilities in Splunk Splunk
- CVE-2026-20253 Splunk Enterprise Missing Authentication for Critical Function
- CVE-2026-76268 Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise
- CVE-2026-76284 Improper Neutralization in Splunk Enterprise
- CVE-2026-76285 Improper Adherence to Coding Standards in Splunk Enterprise
- CVE-2017-17067 Auth bypass in n/a
Sources
Also known as GHSA-9m2v-75c6-7v47.