{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39980", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-08T00:01:47.628Z", "datePublished": "2026-04-09T16:54:31.566Z", "dateUpdated": "2026-04-09T18:44:10.616Z"}, "containers": {"cna": {"title": "OpenCTI affected by RCE via notifier template", "problemTypes": [{"descriptions": [{"cweId": "CWE-1336", "lang": "en", "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrf", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrf"}, {"name": "https://github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5"}], "affected": [{"vendor": "OpenCTI-Platform", "product": "opencti", "versions": [{"version": "< 6.9.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-09T16:54:31.566Z"}, "descriptions": [{"lang": "en", "value": "OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.9.5, the safeEjs.ts file does not properly sanitize EJS templates. Users with the Manage customization capability can run arbitrary JavaScript in the context of the OpenCTI platform process during notifier template execution. This vulnerability is fixed in 6.9.5."}], "source": {"advisory": "GHSA-jv9r-jw2f-rhrf", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-09T18:43:53.562351Z", "id": "CVE-2026-39980", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-09T18:44:10.616Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 6.9.5, the safeEjs.ts file does not properly sanitize EJS templates. Users with the Manage customization capability can run arbitrary JavaScript in the context of the OpenCTI platform process during notifier template execution. This vulnerability is fixed in 6.9.5."}], "id": "CVE-2026-39980", "lastModified": "2026-04-09T18:17:02.203", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-09T18:17:02.203", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1336"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}