{"action":"Upgrade pycti to 6.8.16 or later.","affected":[{"fixed":"6.8.16","introduced":"0"}],"component":"pycti","cve_ids":["CVE-2026-21887"],"ecosystem":"PyPI","epss":0.00249,"exploited":false,"fixed_versions":["6.8.16"],"ghsa_id":"GHSA-ffm6-vvph-g5f5","id":"tcs_01M5KFF5T9KCWXMSZKE29YG9HD","modified_at":"2026-06-22T17:15:08.045739291Z","published_at":"2026-06-22T17:01:22Z","references":["https://osv.dev/vulnerability/GHSA-ffm6-vvph-g5f5","https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-ffm6-vvph-g5f5","https://nvd.nist.gov/vuln/detail/CVE-2026-21887","https://github.com/OpenCTI-Platform/opencti","https://github.com/pypa/advisory-database/tree/main/vulns/pycti/PYSEC-2026-118.yaml"],"severity":{"label":"high","score":7.7},"sources":[{"source":"osv","source_id":"GHSA-ffm6-vvph-g5f5","url":"https://osv.dev/vulnerability/GHSA-ffm6-vvph-g5f5"}],"summary":"OpenCTI has Semi-Blind SSRF via Unvalidated External URL in Data Ingestion Feature"}