Splunk Enterprise: critical vulnerability

Splunk Enterprise

In Splunk Enterprise versions below 10.4.3 and 10.2.7, an unauthenticated user with network access to the Patroni Representational State Transfer (REST) Application Programming Interface (API) on a search head cluster member could execute attacker-controlled operating-system commands.

Do this now

Upgrade Splunk Enterprise to 10.4.3 or 10.2.7 or later and restrict REST API access on search head clusters.

First seen: 23 Oct 2026
Last update: 23 Oct 2026, 19:39 UTC
Identifiers: CVE-2026-76268
CVSS: 9.8
Source: news

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Splunk Enterprise: critical vulnerability
Severity: critical. Patch status: fix status unknown.
Affected: Splunk Enterprise
Ids: CVE-2026-76268

In Splunk Enterprise versions below 10.4.3 and 10.2.7, an unauthenticated user with network access to the Patroni Representational State Transfer (REST) Application Programming Interface (API) on a search head cluster member could execute attacker-controlled operating-system commands.

## Steps
1. Search the repo, its CI and infra config for Splunk Enterprise. If present, report the version in use and whether it's affected.
2. There is no fix yet. Until one ships: In Splunk Enterprise versions below 10.4.3 and 10.2.7, an unauthenticated user with network access to the Patroni Representational State Transfer (REST) Application Programming Interface (API) on a search head cluster member could execute attacker-controlled operating-system commands.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-76268") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://advisory.splunk.com/advisories/SVD-2026-1001 https://nvd.nist.gov/vuln/detail/CVE-2026-76268
https://pwned.coffee/i/in-splunk-enterprise-versions-below-10-4-3-and-10-2-7-an-cve-2026-76268

Timeline

23 Oct 2026, 19:40 UTC
Proof-of-concept code for CVE-2026-76268 is public on GitHub. Unverified, but expect scanning to follow.
23 Oct 2026
First reported.

Sources

Totalone very hot coffee