API metadata disclosure via public OpenAPI file
Published Aug 19, 2026 · Updated Aug 20, 2026
Information disclosure in Splunk Cisco Talos Intelligence for Enterprise Security Cloud before 1.0.3 allows remote attackers to read API metadata. The generated OpenAPI specification is packaged under a Splunk Web static-file path that serves it without authentication. Network access to Splunk Web is sufficient to learn the add-on's REST endpoints and authentication model, without reported data modification or service interruption.
Summary
What happened
Information disclosure in Splunk Cisco Talos Intelligence for Enterprise Security Cloud before 1.0.3 allows remote attackers to read API metadata. The generated OpenAPI specification is packaged under a Splunk Web static-file path that serves it without authentication. Network access to Splunk Web is sufficient to learn the add-on's REST endpoints and authentication model, without reported data modification or service interruption.
The record
- CVE
- CVE-2026-76390
- Published
- Aug 19, 2026
- Updated
- Aug 20, 2026
- Vendor
- Splunk, Inc.
- Product
- Cisco Talos Intelligence for Enterprise Security Cloud
- Classifications
- CWE-200, T1595
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1.0 <1.0.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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