{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-20258: Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-20258","status":"final","version":"1","initial_release_date":"2026-06-10T17:16:23.870Z","current_release_date":"2026-06-10T18:22:27.505Z","revision_history":[{"date":"2026-06-10T17:16:23.870Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.11, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the \"admin\" or \"power\" Splunk roles could store a malicious script in a classic dashboard HTML panel, causing unauthorized JavaScript code to execute in the browser of another user.  \n\nThe vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-20258 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-20258"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-20258"},{"category":"external","summary":"advisory.splunk.com","url":"https://advisory.splunk.com/advisories/SVD-2026-0608"}]},"product_tree":{"branches":[{"category":"vendor","name":"Splunk","branches":[{"category":"product_name","name":"Splunk Enterprise","branches":[{"category":"product_version_range","name":">=10.2 <10.2.4","product":{"name":"Splunk Splunk Enterprise >=10.2 <10.2.4","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_enterprise:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=10.0 <10.0.7","product":{"name":"Splunk Splunk Enterprise >=10.0 <10.0.7","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_enterprise:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=9.4 <9.4.12","product":{"name":"Splunk Splunk Enterprise >=9.4 <9.4.12","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_enterprise:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=9.3 <9.3.13","product":{"name":"Splunk Splunk Enterprise >=9.3 <9.3.13","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_enterprise:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Splunk","branches":[{"category":"product_name","name":"Splunk Cloud Platform","branches":[{"category":"product_version_range","name":">=10.3.2512 <10.3.2512.11","product":{"name":"Splunk Splunk Cloud Platform >=10.3.2512 <10.3.2512.11","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=10.2.2510 <10.2.2510.15","product":{"name":"Splunk Splunk Cloud Platform >=10.2.2510 <10.2.2510.15","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=10.1.2507 <10.1.2507.23","product":{"name":"Splunk Splunk Cloud Platform >=10.1.2507 <10.1.2507.23","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=9.3.2411 <9.3.2411.132","product":{"name":"Splunk Splunk Cloud Platform >=9.3.2411 <9.3.2411.132","product_id":"CSAFPID-8","product_identification_helper":{"cpe":"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-20258","title":"Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise","notes":[{"category":"description","text":"In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.11, 10.2.2510.15, 10.1.2507.23, and 9.3.2411.132, a low-privileged user that does not hold the \"admin\" or \"power\" Splunk roles could store a malicious script in a classic dashboard HTML panel, causing unauthorized JavaScript code to execute in the browser of another user.  \n\nThe vulnerability requires the attacker to phish the victim by tricking them into initiating a request within their browser. The low-privileged user should not be able to exploit the vulnerability at will.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H","baseScore":7.1,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 9.3.13, 9.3.2411.132, 9.4.12, 10.0.7, 10.1.2507.23, 10.2.4, 10.2.2510.15, 10.3.2512.11.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8"]}]}]}