CVE-2026-76389 Server-Side Request Forgery (SSRF) through the REST API in Cisco Talos Intelligence for Enterprise Security Cloud
An attacker with specific capabilities can trigger SSRF to expose tokens, compromising data and system integrity in the Splunk instance.
- 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-2026-76389?
CVE-2026-76389 is a high-severity server-side request forgery vulnerability in Splunk Cisco Talos Intelligence for Enterprise Security Cloud, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Cisco Talos Intelligence for Enterprise Security Cloud versions below 1.0.3, a user that holds a role with the get_talos_enrichment capability could send a crafted request to the Talos intelligence enrichment Representational State Transfer (REST) API endpoint and cause the instance to make an outbound request to an attacker-controlled server. The request could expose tokens that compromise all relevant data and system integrity in the Splunk instance. The vulnerability is possible because the Talos intelligence enrichment REST endpoint accepts the destination for authenticated Splunk management requests from request data. For more information see Deploy Cisco Talos Intelligence for Splunk Enterprise Security (https://help.splunk.com/en/splunk-enterprise-security-8/user-guide/8.0/introduction/deploy-cisco-talos-intelligence-for-splunk-enterprise-security-cloud-only) in the Splunk documentation.
Weakness: CWE-918
Which versions are affected by CVE-2026-76389?
It affects 1 product.
Products include Cisco Talos Intelligence for Enterprise Security Cloud.
How do I fix CVE-2026-76389?
No fix has been published for CVE-2026-76389 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-2026-76389 being exploited?
There is no known exploitation of CVE-2026-76389 in the wild and no public exploit code.
Other vulnerabilities in Splunk Cisco Talos Intelligence for Enterprise Security Cloud
Sources
Also known as GHSA-cccc-wrrh-hw2h.