CVE-2026-76310: Splunk broken access control (CVSS 9.4)

Description

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user who has an embedded report token could download the associated search job dispatch archive, recover session material, and use it to access all relevant data available to the report owner and affect system integrity, including by performing administrative actions when the owner holds the "admin" Splunk role. The vulnerability is possible because embedded report access does not block Representational State Transfer (REST) API dispatch archive download requests. For more information see Additional configuration for embedded reports (https://help.splunk.com/en/splunk-enterprise/create-dashboards-and-reports/reporting-manual/9.1/report-management/additional-configuration-for-embedded-reports) and About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access) in the Splunk documentation.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Affected products

Splunk≥ 10.0.0 < 10.0.9 · ≥ 10.2.0 < 10.2.6 · ≥ 10.4.0 < 10.4.2 · ≥ 9.4.0 < 9.4.14

Remediation

Fixed in

Splunk≥ 10.0.9

Patch & vendor advisories

https://advisory.splunk.com/advisories/SVD-2026-0801

References

https://advisory.splunk.com/advisories/SVD-2026-0801MitigationVendor Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-76310 being actively exploited?

CVE-2026-76310 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.45%.

How severe is CVE-2026-76310?

CVE-2026-76310 has a CVSS 3.1 base score of 9.4, rated critical. EPSS estimates a 0.45% probability of exploitation.

Which products are affected by CVE-2026-76310?

Affected products include Splunk.

How do I fix CVE-2026-76310?

Upgrade affected software to a fixed version, for example Splunk 10.0.9 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-76310 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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