CVE-2026-20265 Insecure Default Domain Allowlist in Splunk AI Toolkit
A low-privileged user can trigger outbound requests to attacker-controlled servers via insecure default allowlists, enabling data exfiltration.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20265?
CVE-2026-20265 is a medium-severity server-side request forgery vulnerability in Splunk AI Toolkit, published on 17 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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 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.
Weakness: CWE-1188
Which versions are affected by CVE-2026-20265?
It affects 1 product.
Products include Splunk Ai Toolkit.
How do I fix CVE-2026-20265?
No fix has been published for CVE-2026-20265 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-20265 being exploited?
There is no known exploitation of CVE-2026-20265 in the wild and no public exploit code.
Other vulnerabilities in Splunk AI Toolkit
- CVE-2026-20266 OS Command Injection in the btool Configuration Helper in Splunk AI Toolkit
- CVE-2026-76395 Deserialization in Splunk AI Toolkit
- CVE-2026-76391 Improper Privilege Management through Agent Run History in Splunk AI Toolkit
- CVE-2026-76394 Missing Authorization in Container and Connection Management through the REST API in Splunk AI Toolkit
- CVE-2026-76397 Improper Access Control in Experiment History through the REST API in Splunk AI Toolkit
Sources
Also known as GHSA-6q6w-qw52-9q3j.