CVE-2026-76321

High

Description

In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user could inject arbitrary Search Processing Language (SPL) into requests that search for events near a selected event. This could allow for unauthorized search execution. The vulnerability is possible because Splunk Web does not consistently escape caller-supplied values when it builds SPL for nearby-event searches, and embedded report access accepts those requests without the expected authorization check. For more information see Use time to find nearby events (https://help.splunk.com/en/splunk-enterprise/search/search-manual/10.2/specify-time-ranges/use-time-to-find-nearby-events) in the Splunk documentation.

SeverityHigh
CVSS7.3
Exploit probability—
ProductSplunk
PublishedAug 19, 2026
First seenAug 19, 2026

How to fix

Update
  • splunk splunk9.4.14, 10.0.9, 10.2.6, 10.4.2 or later

Affected products

ProductAffected versionsFixed in
splunk splunk9.4.0 ≤ v < 9.4.14, 10.0.0 ≤ v < 10.0.9, 10.2.0 ≤ v < 10.2.6, 10.4.0 ≤ v < 10.4.29.4.14, 10.0.9, 10.2.6, 10.4.2

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.