{"schema_version":1,"title":"Citeum Opencti vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 9 vulnerabilities in Citeum Opencti: 0 in the last 7 days and 4 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-76821, was published on 15 September 2026.","url":"https://junglewise.ai/threats/technologies/opencti","json_url":"https://junglewise.ai/threats/technologies/opencti.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/opencti","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":4,"all_time":9,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":2,"last_90_days":4,"last_365_days":9},"latest":[{"cve":"CVE-2026-76821","epss":0.0047,"slug":"cve-2026-76821-opencti-json-mapper-redos-via-unvalidated-regular-expression","title":"OpenCTI JSON mapper ReDoS via unvalidated regular expression","severity":"info","exploited":false,"published_at":"2026-09-15T20:17:57.28+00:00","url":"https://junglewise.ai/threats/cve-2026-76821-opencti-json-mapper-redos-via-unvalidated-regular-expression"},{"cve":"CVE-2026-76820","cvss":7.7,"epss":0.0042,"slug":"cve-2026-76820-opencti-unauthorized-internal-network-access-via","title":"OpenCTI unauthorized internal network access via fetchRemoteStreams","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:57.127+00:00","url":"https://junglewise.ai/threats/cve-2026-76820-opencti-unauthorized-internal-network-access-via"},{"cve":"CVE-2026-35211","cvss":6.5,"epss":0.0052,"slug":"cve-2026-35211-filigran-opencti-code-injection-in-graphql-api","title":"Filigran OpenCTI Code Injection in GraphQL API","severity":"medium","exploited":false,"published_at":"2026-07-08T21:16:48.63+00:00","url":"https://junglewise.ai/threats/cve-2026-35211-filigran-opencti-code-injection-in-graphql-api"},{"cve":"CVE-2026-35210","cvss":7.1,"epss":0.0035,"slug":"cve-2026-35210-filigran-opencti-authorization-bypass-via-synchronized-upsert","title":"Filigran OpenCTI authorization bypass via synchronized-upsert header","severity":"high","exploited":false,"published_at":"2026-07-08T21:16:48.487+00:00","url":"https://junglewise.ai/threats/cve-2026-35210-filigran-opencti-authorization-bypass-via-synchronized-upsert"},{"cve":"CVE-2026-21887","cvss":7.7,"epss":0.0021,"slug":"cve-2026-21887-opencti-ssrf-in-data-ingestion-feature","title":"OpenCTI SSRF in Data Ingestion Feature","severity":"high","exploited":false,"published_at":"2026-06-22T17:01:22+00:00","url":"https://junglewise.ai/threats/cve-2026-21887-opencti-ssrf-in-data-ingestion-feature"},{"cve":"CVE-2024-37155","cvss":6.5,"epss":0.0046,"slug":"cve-2024-37155-opencti-graphql-introspection-restriction-bypass","title":"OpenCTI GraphQL introspection restriction bypass","severity":"medium","exploited":false,"published_at":"2026-06-22T16:43:24+00:00","url":"https://junglewise.ai/threats/cve-2024-37155-opencti-graphql-introspection-restriction-bypass"},{"cve":"CVE-2026-35212","cvss":3.1,"epss":0.0025,"slug":"cve-2026-35212-opencti-xss-in-email-message-observable-body-rendering","title":"OpenCTI XSS in email-message observable body rendering","severity":"low","exploited":false,"published_at":"2026-06-02T22:16:16.727+00:00","url":"https://junglewise.ai/threats/cve-2026-35212-opencti-xss-in-email-message-observable-body-rendering"},{"cve":"CVE-2026-44730","cvss":7.2,"epss":0.0046,"slug":"cve-2026-44730-opencti-privilege-escalation-in-useredit-relationadd","title":"OpenCTI privilege escalation in userEdit relationAdd","severity":"high","exploited":false,"published_at":"2026-05-26T18:16:51.023+00:00","url":"https://junglewise.ai/threats/cve-2026-44730-opencti-privilege-escalation-in-useredit-relationadd"},{"cve":"CVE-2026-27960","cvss":9.8,"epss":0.0181,"slug":"cve-2026-27960-opencti-privilege-escalation-and-authentication-bypass-in-api","title":"OpenCTI privilege escalation and authentication bypass in API","severity":"critical","exploited":false,"published_at":"2026-05-05T19:16:21.38+00:00","url":"https://junglewise.ai/threats/cve-2026-27960-opencti-privilege-escalation-and-authentication-bypass-in-api"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Citeum Opencti","slug":"opencti","vendor":{"name":"Citeum","slug":"citeum","url":"https://junglewise.ai/threats/vendors/citeum"},"aliases":[],"homepage":"https://www.opencti.io/","repo_url":"https://github.com/OpenCTI-Platform/opencti","description":"An open-source platform for managing and visualizing cyber threat intelligence.","url":"https://junglewise.ai/threats/technologies/opencti"},"most_severe":[{"cve":"CVE-2026-27960","cvss":9.8,"epss":0.0181,"slug":"cve-2026-27960-opencti-privilege-escalation-and-authentication-bypass-in-api","title":"OpenCTI privilege escalation and authentication bypass in API","severity":"critical","exploited":false,"published_at":"2026-05-05T19:16:21.38+00:00","url":"https://junglewise.ai/threats/cve-2026-27960-opencti-privilege-escalation-and-authentication-bypass-in-api"},{"cve":"CVE-2026-76820","cvss":7.7,"epss":0.0042,"slug":"cve-2026-76820-opencti-unauthorized-internal-network-access-via","title":"OpenCTI unauthorized internal network access via fetchRemoteStreams","severity":"high","exploited":false,"published_at":"2026-09-15T20:17:57.127+00:00","url":"https://junglewise.ai/threats/cve-2026-76820-opencti-unauthorized-internal-network-access-via"},{"cve":"CVE-2026-21887","cvss":7.7,"epss":0.0021,"slug":"cve-2026-21887-opencti-ssrf-in-data-ingestion-feature","title":"OpenCTI SSRF in Data Ingestion Feature","severity":"high","exploited":false,"published_at":"2026-06-22T17:01:22+00:00","url":"https://junglewise.ai/threats/cve-2026-21887-opencti-ssrf-in-data-ingestion-feature"},{"cve":"CVE-2026-44730","cvss":7.2,"epss":0.0046,"slug":"cve-2026-44730-opencti-privilege-escalation-in-useredit-relationadd","title":"OpenCTI privilege escalation in userEdit relationAdd","severity":"high","exploited":false,"published_at":"2026-05-26T18:16:51.023+00:00","url":"https://junglewise.ai/threats/cve-2026-44730-opencti-privilege-escalation-in-useredit-relationadd"},{"cve":"CVE-2026-35210","cvss":7.1,"epss":0.0035,"slug":"cve-2026-35210-filigran-opencti-authorization-bypass-via-synchronized-upsert","title":"Filigran OpenCTI authorization bypass via synchronized-upsert header","severity":"high","exploited":false,"published_at":"2026-07-08T21:16:48.487+00:00","url":"https://junglewise.ai/threats/cve-2026-35210-filigran-opencti-authorization-bypass-via-synchronized-upsert"},{"cve":"CVE-2026-35211","cvss":6.5,"epss":0.0052,"slug":"cve-2026-35211-filigran-opencti-code-injection-in-graphql-api","title":"Filigran OpenCTI Code Injection in GraphQL API","severity":"medium","exploited":false,"published_at":"2026-07-08T21:16:48.63+00:00","url":"https://junglewise.ai/threats/cve-2026-35211-filigran-opencti-code-injection-in-graphql-api"},{"cve":"CVE-2024-37155","cvss":6.5,"epss":0.0046,"slug":"cve-2024-37155-opencti-graphql-introspection-restriction-bypass","title":"OpenCTI GraphQL introspection restriction bypass","severity":"medium","exploited":false,"published_at":"2026-06-22T16:43:24+00:00","url":"https://junglewise.ai/threats/cve-2024-37155-opencti-graphql-introspection-restriction-bypass"},{"cve":"CVE-2026-35212","cvss":3.1,"epss":0.0025,"slug":"cve-2026-35212-opencti-xss-in-email-message-observable-body-rendering","title":"OpenCTI XSS in email-message observable body rendering","severity":"low","exploited":false,"published_at":"2026-06-02T22:16:16.727+00:00","url":"https://junglewise.ai/threats/cve-2026-35212-opencti-xss-in-email-message-observable-body-rendering"},{"cve":"CVE-2026-76821","epss":0.0047,"slug":"cve-2026-76821-opencti-json-mapper-redos-via-unvalidated-regular-expression","title":"OpenCTI JSON mapper ReDoS via unvalidated regular expression","severity":"info","exploited":false,"published_at":"2026-09-15T20:17:57.28+00:00","url":"https://junglewise.ai/threats/cve-2026-76821-opencti-json-mapper-redos-via-unvalidated-regular-expression"}],"generated_at":"2026-09-26T13:07:00.120236+00:00"}