Vulnerability Description
In Cisco Talos Intelligence for Enterprise Security Cloud versions below 1.0.3, an unauthenticated user could access the add-on OpenAPI specification through Splunk Web static file paths. The exposed specification could allow for reconnaissance of the add-on Representational State Transfer (REST) API endpoints and authentication model. The vulnerability is possible because the generated OpenAPI specification is packaged in a static file path that Splunk Web serves without authentication. 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Talos Intelligence For Enterprise Security Cloud | >= 1.0.0, < 1.0.3 |
Related Weaknesses (CWE)
References
- https://advisory.splunk.com/advisories/SVD-2026-0808Vendor Advisory
FAQ
What is CVE-2026-76390?
CVE-2026-76390 is a vulnerability with a CVSS score of 5.3 (MEDIUM). In Cisco Talos Intelligence for Enterprise Security Cloud versions below 1.0.3, an unauthenticated user could access the add-on OpenAPI specification through Splunk Web static file paths. The exposed ...
How severe is CVE-2026-76390?
CVE-2026-76390 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-76390?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Talos Intelligence For Enterprise Security Cloud.