{"action":"Upgrade pycti to 6.5.2 or later.","affected":[{"fixed":"6.5.2","introduced":"0"}],"component":"pycti","cve_ids":["CVE-2025-26621"],"ecosystem":"PyPI","epss":0.0042,"exploited":false,"fixed_versions":["6.5.2"],"id":"tcs_01M5KGP1BQ89CW4VPXPCA39781","modified_at":"2026-05-20T09:19:14.289613Z","published_at":"2025-05-19T16:15:28.560Z","references":["https://osv.dev/vulnerability/PYSEC-2025-180","https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-gq63-jm3h-374p","https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-mf88-g2wq-p7qm"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"PYSEC-2025-180","url":"https://osv.dev/vulnerability/PYSEC-2025-180"}],"summary":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.5.2, any user with the capability manage customizations can edit webhook that wi"}