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TI-2026-79016 Aliases CVE-2026-76290GHSA-xj2g-87r9-g689

Denial of service via unauthenticated downloads in Splunk Enterprise

Priority LOW 39CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

Splunk Enterprise from 10.4 before 10.4.4, from 10.2 before 10.2.8, and from 10.0 before 10.0.11 is affected. The Edge Processor package download endpoint in the Splunk Pipeline Builders app accepts requests without authentication and loads the complete package into memory for each request, an uncontrolled resource consumption flaw (CWE-400). An unauthenticated remote attacker can send repeated requests to make the Splunk daemon consume excessive system resources and potentially stop responding.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

In Splunk Enterprise versions below 10.4.4, 10.2.8, and 10.0.11, an unauthenticated user could send repeated requests to the Edge Processor package download endpoint in the Splunk Pipeline Builders app. The requests could cause the Splunk daemon to consume excessive system resources and potentially stop responding. The vulnerability is possible because the endpoint accepts package download requests without authentication and reads and base64-encodes the complete package in memory for each request. After upgrading, prepare all existing Edge Processor instances, turn on authentication for Edge Processor package downloads, and restart Splunk Enterprise. For more information, see Enable authentication for Edge Processor package downloads (https://help.splunk.com/en/data-management/process-data-at-the-edge/use-edge-processors-for-splunk-enterprise/10.4/administer-edge-processors/enable-authentication-for-edge-processor-package-downloads).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00497 42nd percentileScored 2026-11-08
Fix Fixed Splunk Enterprise (Splunk): 10.4.4, 10.2.8, 10.0.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SplunkSplunk Enterprise10.4 to before 10.4.4; 10.2 to before 10.2.8; 10.0 to before 10.0.1110.4.4, 10.2.8, 10.0.11Patch availableCNA
  • Splunk Enterprise VendorSplunk Affected 10.4 to before 10.4.4; 10.2 to before 10.2.8; 10.0 to before 10.0.11 Fixed in 10.4.4, 10.2.8, 10.0.11 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*10.0.0 to before 10.0.11; 10.2.0 to before 10.2.8; 10.4.0 to before 10.4.4VulnerableSplunk
  • cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* Versions 10.0.0 to before 10.0.11; 10.2.0 to before 10.2.8; 10.4.0 to before 10.4.4 Vulnerable ·Splunk

Remediation

Upgrade Splunk Enterprise to 10.4.4, 10.2.8, or 10.0.11. After upgrading, prepare all existing Edge Processor instances, turn on authentication for Edge Processor package downloads, and restart Splunk Enterprise.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Splunk Enterprise (Splunk) Fixed in 10.4.4, 10.2.8, 10.0.11

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-76290
  2. 2026-10-22 Alias added: GHSA-xj2g-87r9-g689
  3. 2026-10-22 CISA SSVC decision points changed
  4. 2026-10-22 Priority changed: MEDIUM → LOW

References

Advisory 1

  • TI-2026-16444 Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk Enterprise KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
  • TI-2023-24841 Remote code execution (RCE) in Splunk Enterprise through Insecure XML Parsing CVSS 3.1HIGH 8.8
  • TI-2023-15979 ‘edit_user’ Capability Privilege Escalation CVSS 3.1HIGH 8.8
  • TI-2024-30707 Remote Code Execution (RCE) due to insecure session storage configuration in Splunk Enterprise on Windows CVSS 3.1HIGH 8.8
  • TI-2022-21345 Reflected Cross-Site Scripting via the radio template in Splunk Enterprise CVSS 3.1HIGH 8.8
See all 297 →

Sources

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