Stored Cross-Site Scripting (XSS) through Notes in Splunk SOAR
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
In Splunk SOAR versions below 8.6.0, a user who holds the "Incident Commander" Splunk SOAR role could store JavaScript in a note and run it in the browser of another user when that user opens the note. The stored Cross-Site Scripting (XSS) vulnerability is possible because Splunk SOAR can treat existing note content as Hypertext Markup Language (HTML) without sanitizing that content when the note format changes. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The user who holds the "Incident Commander" Splunk SOAR role should not be able to exploit the vulnerability at will. For more information see Manage roles and permissions in Splunk SOAR (Cloud) (https://help.splunk.com/en/splunk-soar/soar-cloud/administer-soar-cloud/manage-your-splunk-soar-cloud-users-and-accounts/manage-roles-and-permissions-in-splunk-soar-cloud) in the Splunk documentation.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Splunk SOAR (Splunk) Fixed in 8.6.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Splunk SOAR 8.6.0
15 records Highest priority Priority LOW 15 LOW
Other records, highest priority first
- TI-2026-53411 Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOARPriority LOW 38
- TI-2026-53417 Improper Certificate Validation through CyberArk Vault Privileged Access Manager in Splunk SOARPriority LOW 34
- TI-2026-53412 Remote Code Execution (RCE) through Path Traversal in the REST API in Splunk SOARPriority LOW 34
Timeline
- 2026-10-02 Threatist record created from CVE-2026-76367
- 2026-10-03 Alias added: GHSA-w7fq-wgjx-63h9
References
More Splunk Soar vulnerabilities
- TI-2026-53411 Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAR CVSS 3.1HIGH 8.1
- TI-2023-03711 Unauthenticated Log Injection In Splunk SOAR CVSS 3.1HIGH 8.6
- TI-2026-53417 Improper Certificate Validation through CyberArk Vault Privileged Access Manager in Splunk SOAR CVSS 3.1HIGH 7.4
- TI-2026-53412 Remote Code Execution (RCE) through Path Traversal in the REST API in Splunk SOAR CVSS 3.1HIGH 7.6
- TI-2026-53420 Structured Query Language (SQL) Injection through Custom Lists in Splunk SOAR CVSS 3.1MEDIUM 6.5
- TI-2026-53419 Structured Query Language (SQL) Injection through Custom Function Results in Splunk SOAR CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-76367 · CVE Program
- CVE-2026-76367 · NVD
- FIRST EPSS
- GHSA-w7fq-wgjx-63h9 · GitHub Advisory Database · CC BY 4.0
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