CVE-2026-76356: In Splunk SOAR versions below 8.6.0, an unauthenticated user could spoof the source IP address in a crafted re

Q: How do I fix CVE-2026-76356?

soar: upgrade to 8.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-76356 being exploited?

CVE-2026-76356 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-76356 affect?

CVE-2026-76356 affects soar. Severity is high (CVSS 8.1). In Splunk SOAR versions below 8.6.0, an unauthenticated user could spoof the source IP address in a crafted request to an Automation Broker notification endpoint and execute arbitrary code on the Splunk SOAR host. The vulnerability is possi

Q: How urgent is CVE-2026-76356?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.1REMOTEUPGRADE

CVE-2026-76356 is a high-severity flaw (CVSS 8.1) affecting soar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Splunk SOAR versions below 8.6.0, an unauthenticated user could spoof the source IP address in a crafted request to an Automation Broker notification endpoint and execute arbitrary code on the Splunk SOAR host. The vulnerability is possible because the Splunk SOAR Automation Broker trusts a client-supplied source IP address header as proof that the request originates from the local system. Successful exploitation can expose all relevant data,

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-290
Published	2026-08-19
Last modified	2026-08-27

Publisher (CNA): Cisco Systems, Inc. · Vendor: splunk

Last updated 2026-08-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-19 22:17 UTCPublished CVE record published
2026-08-27 17:20 UTCUpdated Record last modified

splunk soar UPGRADE

Affected: < 8.6.0

Fixed in: 8.6.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy soar || rpm -q soar || soar --version

2. UPGRADE to 8.6.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade soar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade soar

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-76356?

soar: upgrade to 8.6.0. Exact commands for each OS are on this page.

Is CVE-2026-76356 being exploited?

CVE-2026-76356 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-76356 affect?

CVE-2026-76356 affects soar. Severity is high (CVSS 8.1). In Splunk SOAR versions below 8.6.0, an unauthenticated user could spoof the source IP address in a crafted request to an Automation Broker notification endpoint and execute arbitrary code on the Splunk SOAR host. The vulnerability is possi

How urgent is CVE-2026-76356?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

Software pages

Splunk vulnerabilities

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References

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