Cisco Talos Intelligence for Enterprise Security Cloud up to 1.0.2 OpenAPI Specification information disclosure

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Cisco Talos Intelligence for Enterprise Security Cloud up to 1.0.2. This impacts an unknown function of the component OpenAPI Specification. This manipulation causes information disclosure. This vulnerability is tracked as CVE-2026-76390. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Cisco Talos Intelligence for Enterprise Security Cloud up to 1.0.2 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component OpenAPI Specification. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

The advisory is shared at advisory.splunk.com. This vulnerability is known as CVE-2026-76390 since 08/19/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/19/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 1.0.3 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Cloud Software

Vendor

• Cisco

Name

• Talos Intelligence for Enterprise Security Cloud

Version

• 1.0.0
• 1.0.1
• 1.0.2

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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