Cyber Resilience

CVE-2026-20265

Splunk Ai Toolkit 5.7.0 – 5.7.4

Published
17 June 2026
Modified
22 June 2026
Patch / advisory
View advisory
CVSS Score v3.1 4.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0022 12th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-20265 is a medium-severity Initialization of a Resource with an Insecure Default (CWE-1188) vulnerability in Splunk Ai Toolkit. Its CVSS base score is 4.3 (Medium).

Operationally, ranked at the 12th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as Other AI Platforms; in the Privacy and Disclosure risk domain.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-6 (Least Privilege) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

In Splunk AI Toolkit versions below 5.7.4, a low-privileged user that does not hold the "admin" or "power" Splunk roles could cause the Splunk AI Toolkit to make outbound requests over HTTP to a server that an attacker controls, which…

more

could allow for data exfiltration. The vulnerability exists because of an insecure default domain allowlist in the Splunk AI Toolkit, which does not restrict outbound AI agent requests to approved external domains.

CWE(s)
CWE-1188

AI Security AnalysisAI

AI Category
Other AI Platforms
Risk Domain
Privacy and Disclosure
OWASP Top 10 for LLMs 2025
None mapped
Classification Reason
Matched keywords: ai, ai, ai, ai

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

Insufficient information to map techniques.
Confidence: LOW · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-20266Same product: Splunk Ai Toolkit
CVE-2026-20238Same product: Splunk Ai Toolkit
CVE-2026-20239Same vendor: Splunk
CVE-2024-53246Same vendor: Splunk
CVE-2026-20204Same vendor: Splunk
CVE-2025-20383Same vendor: Splunk
CVE-2025-20387Same vendor: Splunk
CVE-2026-20296Same vendor: Splunk
CVE-2023-32714Same vendor: Splunk
CVE-2025-20300Same vendor: Splunk

Affected Assets

splunk
ai toolkit
5.7.0 — 5.7.4

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-6 Least Privilege
  • AC-3 Access Enforcement
  • SC-7 Boundary Protection
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 13 hardening rules · 7 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V14.3.2
  • V6.3.2
  • V11.3.1
  • V13.2.3

Mitigating Controls (NIST 800-53 r5) AI

AC-6 Least Privilege good match
prevent

Directly prevents low-privileged users from exercising the outbound-request capability that should be restricted to admin/power roles.

AC-3 Access Enforcement good match
prevent

Enforces the authorization decision so that only explicitly permitted roles can trigger AI-agent outbound HTTP requests.

SC-7 Boundary Protection partial match
prevent

Boundary-protection mechanisms can enforce an approved-domain allowlist at the network layer, blocking exfiltration to attacker-controlled hosts.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-01 full match
prevents

Hardened baselines and configuration management directly replace insecure defaults with secure settings.

PR.PS-06 mostly match
prevents

Secure development practices include designing products with secure defaults rather than insecure ones.

ID.RA-09 partial match
prevents

Pre-acquisition integrity checks can reject products known to ship with insecure defaults.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.9 Configuration management mostly match
prevents

Mandating secure baseline templates and immediate replacement of vendor defaults directly stops systems from being deployed with insecure factory settings that attackers can exploit.

A.8.32 Change management partial match
prevents

Requiring documented specification, testing, and acceptance of changes ensures that new or modified components are not initialized with insecure default settings that would otherwise be left in production.

A.5.21 Managing information security in the ICT supply chain none match
none

Requiring suppliers to document secure configuration and implemented security functions reduces the likelihood that products will be initialised with insecure default settings.

Hardening callouts derived

Configuration rules from DISA STIG baselines that reduce the attack surface for weaknesses of the type cited by this CVE. Derived transitively via CVE→CWE→STIG over `controls_xwalks` (authoritative rows only).

Oracle Linux 8 (1 rule)
  • V-248823 OL 8 must not have the telnet-server package installed. via CWE-1188
RHEL 7 (1 rule)
  • V-204627 SNMP community strings on the Red Hat Enterprise Linux operating system must be changed from the default. via CWE-1188
Ubuntu 22.04 (1 rule)
  • V-260529 Ubuntu 22.04 LTS must be configured so that remote X connections are disabled, unless to fulfill documented and validated mission requirements. via CWE-1188
Ubuntu 24.04 (1 rule)
  • V-270708 Ubuntu 24.04 LTS must be configured so that remote X connections are disabled, unless to fulfill documented and validated mission requirements. via CWE-1188
Windows Server 2019 (1 rule)
  • V-205741 Windows Server 2019 Active Directory Group Policy objects must have proper access control permissions. via CWE-1188
Windows Server 2022 (1 rule)
  • V-254393 Windows Server 2022 Active Directory Group Policy objects must have proper access control permissions. via CWE-1188

References