CVE-2026-76255: In Splunk Enterprise versions below 10.4.1, 10.2.6, 10.0.8, and 9.4.13, a user who does not hold the "admin" o

Routine

MEDIUM 6.4UPGRADE

CVE-2026-76255 is a medium-severity flaw (CVSS 6.4) affecting splunk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Splunk Enterprise versions below 10.4.1, 10.2.6, 10.0.8, and 9.4.13, a user who does not hold the "admin" or "power" Splunk roles could trick another user into running arbitrary Search Processing Language (SPL) commands through the Data Model Editor using the permissions of the affected user. The commands could access all relevant data available to the affected user and affect system integrity. The vulnerability is possible because Splunk Web

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-862
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 splunk UPGRADE

Affected: >= 9.4.0 and < 9.4.13 · >= 10.0.0 and < 10.0.8 · >= 10.2.0 and < 10.2.6 · 10.4.0

Fixed in: 9.4.13, 10.0.8, 10.2.6

Safe to downgrade to: a release before 9.4.0

1. Check installed version

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

2. UPGRADE to 9.4.13 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade splunk

Note

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

3. If no update is available yet, DOWNGRADE to a release before 9.4.0 (Debian / Ubuntu)

apt-cache madison splunk sudo apt install splunk=<VERSION_BEFORE_9.4.0> sudo apt-mark hold splunk

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list splunk sudo dnf downgrade splunk-<VERSION_BEFORE_9.4.0> sudo dnf versionlock add splunk

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-76255?

splunk: upgrade to 9.4.13, 10.0.8, 10.2.6. Exact commands for each OS are on this page.

Is CVE-2026-76255 being exploited?

CVE-2026-76255 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-2026-76255 affect?

CVE-2026-76255 affects splunk. Severity is medium (CVSS 6.4). In Splunk Enterprise versions below 10.4.1, 10.2.6, 10.0.8, and 9.4.13, a user who does not hold the "admin" or "power" Splunk roles could trick another user into running arbitrary Search Processing Language (SPL) commands through the Data

How urgent is CVE-2026-76255?

Priority 28/100. No elevated risk signals yet.

Software pages

Splunk vulnerabilities

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References

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