CVE-2026-20254

{"id": "CVE-2026-20254", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20254", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-10T18:26:45.451095Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.7, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.1}]}, "affected": [{"source": "psirt@cisco.com", "affectedData": [{"vendor": "Splunk", "product": "Splunk Enterprise", "versions": [{"status": "affected", "version": "10.2", "lessThan": "10.2.4", "versionType": "custom"}, {"status": "affected", "version": "10.0", "lessThan": "10.0.7", "versionType": "custom"}, {"status": "affected", "version": "9.4", "lessThan": "9.4.12", "versionType": "custom"}, {"status": "affected", "version": "9.3", "lessThan": "9.3.13", "versionType": "custom"}]}, {"vendor": "Splunk", "product": "Splunk Cloud Platform", "versions": [{"status": "affected", "version": "10.3.2512", "lessThan": "10.3.2512.13", "versionType": "custom"}, {"status": "affected", "version": "10.2.2510", "lessThan": "10.2.2510.15", "versionType": "custom"}, {"status": "affected", "version": "10.1.2507", "lessThan": "10.1.2507.23", "versionType": "custom"}, {"status": "affected", "version": "9.3.2411", "lessThan": "9.3.2411.132", "versionType": "custom"}]}]}], "published": "2026-06-10T18:16:40.887", "references": [{"url": "https://advisory.splunk.com/advisories/SVD-2026-0604", "tags": ["Vendor Advisory"], "source": "psirt@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "In Splunk Enterprise versions below 10.2.4, 10.0.7, 9.4.12, and 9.3.13, and Splunk Cloud Platform versions below 10.3.2512.13, 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 craft a malicious classic dashboard that exfiltrates sensitive data to an external server when a higher-privileged user views it, bypassing the external content restriction through a Cascading Style Sheets (CSS) injection.<br><br>The Trusted Domains security check does not fully validate inline style attribute values, which can allow for outbound requests to untrusted domains and credential exfiltration when a victim views a crafted dashboard."}], "lastModified": "2026-06-17T10:17:20.270", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "B9D80F1C-F849-4D62-B82A-6B8963EEEBFB", "versionEndExcluding": "9.3.13", "versionStartIncluding": "9.3.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "423B8DF2-B7A5-41AA-9CFD-75B2FD503ACC", "versionEndExcluding": "9.4.12", "versionStartIncluding": "9.4.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "0C9F1DED-280E-4C76-A867-A7A8FCBD1F7A", "versionEndExcluding": "10.0.7", "versionStartIncluding": "10.0.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "E3B992C0-AD5E-43A1-BAA3-6B11FFD5D750", "versionEndExcluding": "10.2.4", "versionStartIncluding": "10.2.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "88A68C7C-BE2C-465C-812B-8F211A8AE935", "versionEndExcluding": "9.3.2411.132", "versionStartIncluding": "9.3.2411"}, {"criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "84E3B0CD-9909-4F06-9ABE-763705D501C3", "versionEndExcluding": "10.1.2507.23", "versionStartIncluding": "10.1.2507"}, {"criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "71B91525-F2D6-4699-8D6B-8D375A8785EE", "versionEndExcluding": "10.2.2510.15", "versionStartIncluding": "10.2.2510"}, {"criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6387100F-0867-4B83-8071-BA1FCE023B2F", "versionEndExcluding": "10.3.2512.13", "versionStartIncluding": "10.3.2512"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@cisco.com"}