CVE-2026-76311Network attack vector

Unauthorized data access via archive download

Published Aug 19, 2026 · Updated Aug 21, 2026

Splunk Enterprise before 10.4.2, 10.2.6, 10.0.9, and 9.4.14 lets remote attackers read report-owner data via an embedded report token. The embedded-report authorization flow does not stop dispatch-archive download requests before the archive starts streaming, so a token holder can retrieve archived session material from the report search job. Exploitation requires possession of a valid embedded report token and reaches the report owner's available permissions, which can include integrity-impacting actions on the instance.

CVSS severity9.4
Critical
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Splunk Enterprise before 10.4.2, 10.2.6, 10.0.9, and 9.4.14 lets remote attackers read report-owner data via an embedded report token. The embedded-report authorization flow does not stop dispatch-archive download requests before the archive starts streaming, so a token holder can retrieve archived session material from the report search job. Exploitation requires possession of a valid embedded report token and reaches the report owner's available permissions, which can include integrity-impacting actions on the instance.

The record

CVE
CVE-2026-76311
Published
Aug 19, 2026
Updated
Aug 21, 2026
Vendor
Zoom Video Communications, Inc.
Product
Splunk Enterprise
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

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=10.0 <10.0.9
  2. Affected versionversion=10.2 <10.2.6
  3. Affected versionversion=10.4 <10.4.2
  4. Affected versionversion=9.4 <9.4.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zoom Video Communications, Inc. · Splunk Enterpriseversion=10.0 <10.0.9; version=10.2 <10.2.6; version=10.4 <10.4.2; version=9.4 <9.4.14

Published CVSS scores

9.4SplunkCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

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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