176 lines
7.8 KiB
JSON
176 lines
7.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-20256",
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"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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"state": "PUBLISHED",
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"assignerShortName": "cisco",
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"dateReserved": "2025-10-08T11:59:15.401Z",
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"datePublished": "2026-06-10T17:15:55.966Z",
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"dateUpdated": "2026-06-10T18:19:26.044Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"product": "Splunk Enterprise",
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"vendor": "Splunk",
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"versions": [
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{
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"version": "10.2",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "10.2.4"
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},
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{
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"version": "10.0",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "10.0.7"
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},
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{
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"version": "9.4",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "9.4.12"
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},
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{
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"version": "9.3",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "9.3.13"
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}
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]
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},
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{
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"product": "Splunk Cloud Platform",
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"vendor": "Splunk",
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"versions": [
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{
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"version": "10.3.2512",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "10.3.2512.13"
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},
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{
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"version": "10.2.2510",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "10.2.2510.15"
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},
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{
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"version": "10.1.2507",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "10.1.2507.23"
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},
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{
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"version": "9.3.2411",
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"status": "affected",
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"versionType": "custom",
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"lessThan": "9.3.2411.132"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"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 cause data exfiltration through classic dashboards by redirecting a victim to an external site using a protocol-relative URL in a drill-down link.<br><br>The vulnerability exists because the URL classifier in classic dashboards only recognizes `http://` and `https://` schemes when checking for external URLs. Protocol-relative URLs such as `//attacker.com` bypass this check entirely, and Splunk Web does not show the external-navigation warning dialog to the victim."
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}
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],
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"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 cause data exfiltration through classic dashboards by redirecting a victim to an external site using a protocol-relative URL in a drill-down link.<br><br>The vulnerability exists because the URL classifier in classic dashboards only recognizes `http://` and `https://` schemes when checking for external URLs. Protocol-relative URLs such as `//attacker.com` bypass this check entirely, and Splunk Web does not show the external-navigation warning dialog to the victim."
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}
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],
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"references": [
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{
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"url": "https://advisory.splunk.com/advisories/SVD-2026-0606"
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}
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],
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"title": "Improper Input Validation through Protocol-Relative URL in Classic Dashboards in Splunk Enterprise",
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"datePublic": "2026-06-10T00:00:00.000Z",
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"metrics": [
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{
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"cvssV3_1": {
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N",
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"version": "3.1",
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"baseScore": 5.7,
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"baseSeverity": "MEDIUM"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "cwe",
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"description": "The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program.",
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"cweId": "CWE-20"
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}
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]
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}
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],
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"source": {
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"advisory": "SVD-2026-0606"
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},
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"credits": [
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{
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"lang": "en",
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"value": "Tony Tong (tongster)"
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}
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],
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"providerMetadata": {
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"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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"shortName": "cisco",
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"dateUpdated": "2026-06-10T17:15:55.966Z"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-06-10T18:18:59.939227Z",
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"id": "CVE-2026-20256",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-06-10T18:19:26.044Z"
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}
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}
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]
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}
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} |