{"id":"CVE-2026-39980","state":"PUBLISHED","title":"OpenCTI affected by RCE via notifier template","description":"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.","publishedAt":"2026-04-09T16:54:31.566Z","updatedAt":"2026-04-09T18:44:10.616Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["OpenCTI-Platform opencti"],"affected":[{"vendor":"OpenCTI-Platform","product":"opencti","versions":[{"version":"< 6.9.5","status":"affected"}]}],"references":["https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrf","https://github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5"],"weaknesses":["CWE-1336"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/39xxx/CVE-2026-39980.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-39980","state":"PUBLISHED","datePublished":"2026-04-09T16:54:31.566Z","dateUpdated":"2026-04-09T18:44:10.616Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-08T00:01:47.628Z"},"containers":{"cna":{"title":"OpenCTI affected by RCE via notifier template","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."}],"affected":[{"vendor":"OpenCTI-Platform","product":"opencti","versions":[{"version":"< 6.9.5","status":"affected"}]}],"references":[{"url":"https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrf","name":"https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-jv9r-jw2f-rhrf","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5","name":"https://github.com/OpenCTI-Platform/opencti/releases/tag/6.9.5","tags":["x_refsource_MISC"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1336","lang":"en","description":"CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-09T16:54:31.566Z"},"source":{"advisory":"GHSA-jv9r-jw2f-rhrf","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-09T18:44:10.616Z"}}]}}}