What’s Vulnerable › Vulnerabilities
CVE-2026-76390: Information Disclosure through Splunk Web in Cisco Talos Intelligence for Enterprise Security Cloud
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-19 · updated 2026-10-24
- Weakness: CWE-200
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.
Affected products
- Splunk Cisco Talos Intelligence for Enterprise Security Cloud: from 1.0.0 before 1.0.3 — fixed in 1.0.3
How to fix
Upgrade to a fixed version: Splunk Cisco Talos Intelligence for Enterprise Security Cloud 1.0.3. Check the vendor advisory for mitigations.
References
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