CVE-2026-76303
Stored Cross-Site Scripting (XSS) through App Documentation in Splunk SOAR
Published Oct 21, 2026
CVSS 3.1 · 5.7 Medium
EPSS < 1%
KEV · Not listed
Description
In Splunk SOAR versions below 8.7.0, a user that holds a role with the install_apps capability could store attacker-controlled content that Splunk SOAR displays in app documentation by installing an app. If another user who holds a role with permission to view apps opens the app documentation, Splunk SOAR could run that content in the browser of the user who opened the app documentation. With this access, the first user could access data and make changes that the user who opened the app documentation could make.
The vulnerability is possible because Splunk SOAR does not sanitize app documentation content before it displays that content.
The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The user that holds a role with the install_apps capability should not be able to exploit the vulnerability at will.
For more information see Manage roles and permissions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/7.1.0/manage-your-splunk-soar-on-premises-users-and-accounts/manage-roles-and-permissions-in-splunk-soar-on-premises) and Add and configure apps and assets to provide actions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/8.6.0/manage-your-splunk-soar-on-premises-apps-and-assets/add-and-configure-apps-and-assets-to-provide-actions-in-splunk-soar-on-premises) in the Splunk documentation.
The vulnerability is possible because Splunk SOAR does not sanitize app documentation content before it displays that content.
The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The user that holds a role with the install_apps capability should not be able to exploit the vulnerability at will.
For more information see Manage roles and permissions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/7.1.0/manage-your-splunk-soar-on-premises-users-and-accounts/manage-roles-and-permissions-in-splunk-soar-on-premises) and Add and configure apps and assets to provide actions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/8.6.0/manage-your-splunk-soar-on-premises-apps-and-assets/add-and-configure-apps-and-assets-to-provide-actions-in-splunk-soar-on-premises) in the Splunk documentation.
Affected Products
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CVE record
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NVD configurations
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Red Hat packages
No data
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OpenCVE enrichment
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Splunk | Splunk SOAR | affected |
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Splunk | Splunk |
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Remediation
Vendor Solution
Upgrade Splunk SOAR to version 8.7.0 or higher.
Tracking
Advisories
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity High
Privileges Required High
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact None
User Interaction Required
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.175% probability within 30 days)
Exploitation none
Automatable no
Technical Impact total
References
| Link | Providers |
|---|---|
| https://advisory.splunk.com/advisories/SVD-2026-1010 |
|
History
Nov 5, 2026 9:30 PM
First appearance in the feed. Affected versions updated. Affected vendors updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Splunk soar
|
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| CPEs | cpe:2.3:a:splunk:soar:*:*:*:*:on-premises:*:*:* | |
| Vendors & Products |
Splunk soar
|
Oct 25, 2026 7:15 AM
Scoring metrics updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Oct 22, 2026 10:45 AM
First appearance in the feed. Affected vendors updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Splunk
Splunk splunk |
|
| Vendors & Products |
Splunk
Splunk splunk |
Oct 21, 2026 11:00 PM
Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In Splunk SOAR versions below 8.7.0, a user that holds a role with the install_apps capability could store attacker-controlled content that Splunk SOAR displays in app documentation by installing an app. If another user who holds a role with permission to view apps opens the app documentation, Splunk SOAR could run that content in the browser of the user who opened the app documentation. With this access, the first user could access data and make changes that the user who opened the app documentation could make. The vulnerability is possible because Splunk SOAR does not sanitize app documentation content before it displays that content. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The user that holds a role with the install_apps capability should not be able to exploit the vulnerability at will. For more information see Manage roles and permissions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/7.1.0/manage-your-splunk-soar-on-premises-users-and-accounts/manage-roles-and-permissions-in-splunk-soar-on-premises) and Add and configure apps and assets to provide actions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/8.6.0/manage-your-splunk-soar-on-premises-apps-and-assets/add-and-configure-apps-and-assets-to-provide-actions-in-splunk-soar-on-premises) in the Splunk documentation. | |
| Title | Stored Cross-Site Scripting (XSS) through App Documentation in Splunk SOAR | |
| Weaknesses | CWE-79 | |
| References |
| |
| Metrics |
cvssV3_1
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Weaknesses
