CVE-2026-76387Network attack vector

Authenticated SPL injection via unvalidated filter fields

Published Aug 19, 2026 · Updated Aug 21, 2026

SPL injection in Splunk Enterprise Security before 8.6.1 allows remote authenticated users to access data and alter scheduled-search results. Analyst Queue filter handling inserts unvalidated filter field names into SPL searches. A role containing mc_investigation_read is required, and the resulting access and integrity effects are limited to data and scheduled searches available to the affected user.

CVSS severity8.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SPL injection in Splunk Enterprise Security before 8.6.1 allows remote authenticated users to access data and alter scheduled-search results. Analyst Queue filter handling inserts unvalidated filter field names into SPL searches. A role containing mc_investigation_read is required, and the resulting access and integrity effects are limited to data and scheduled searches available to the affected user.

The record

CVE
CVE-2026-76387
Published
Aug 19, 2026
Updated
Aug 21, 2026
Vendor
Splunk, Inc.
Product
Splunk Enterprise Security
Classifications
CWE-20, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.6 <8.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Splunk, Inc. · Splunk Enterprise Securityversion=8.6 <8.6.1

Published CVSS scores

8.1SplunkCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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