{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-76303", "tracking": { "current_release_date": "2026-10-28T09:14:15.841682Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-76303", "initial_release_date": "2026-10-21T23:39:17.570393Z", "revision_history": [ { "date": "2026-10-21T23:39:17.570393Z", "number": "1", "summary": "CVSS created.| CWES created (1).| Products created (1).| References created (1).| Description created for source.| Unknown change." }, { "date": "2026-10-21T23:39:29.252400Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-10-23T15:42:34.143436Z", "number": "3", "summary": "Unknown change." }, { "date": "2026-10-23T15:42:44.761181Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-10-23T15:59:00.435420Z", "number": "5", "summary": "EPSS created.| Unknown change." }, { "date": "2026-10-23T16:05:09.746861Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-10-26T16:34:29.980590Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-10-26T16:34:31.297277Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-10-26T18:39:40.334211Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Products connected (1).| References created (4)." }, { "date": "2026-10-26T18:39:47.563865Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-10-28T09:13:52.812228Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)" } ], "status": "interim", "version": "11" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<8.7.0", "product": { "name": "vers:unknown/<8.7.0", "product_id": "CSAFPID-9815427" } } ], "category": "product_name", "name": "SOAR" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<8.7.0", "product": { "name": "vers:unknown/<8.7.0", "product_id": "CSAFPID-9807890" } } ], "category": "product_name", "name": "Splunk SOAR" } ], "category": "vendor", "name": "Splunk" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-76303", "cwe": { "id": "CWE-79", "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')" }, "notes": [ { "category": "description", "text": "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.\nThe vulnerability is possible because Splunk SOAR does not sanitize app documentation content before it displays that content.\nThe 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.\nFor 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": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-76303" }, { "category": "description", "text": "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.\nThe vulnerability is possible because Splunk SOAR does not sanitize app documentation content before it displays that content.\nThe 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.\nFor 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": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-76303" }, { "category": "other", "text": "0.00176", "title": "EPSS" }, { "category": "other", "text": "5.0", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), The value of the most recent EPSS score", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-9807890", "CSAFPID-9815427" ] }, "references": [ { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76303" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-4099.json" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0457" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-76303" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-76303" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://advisory.splunk.com/advisories/SVD-2026-1010" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-4099.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-4099" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://advisory.splunk.com/advisories/SVD-2026-1011" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N", "baseScore": 5.7, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-9807890", "CSAFPID-9815427" ] } ], "title": "CVE-2026-76303" } ] }