{"action":"Upgrade agents to 0.3.7 or later.","affected":[{"fixed":"0.3.7","introduced":"0"}],"component":"agents","cve_ids":["CVE-2026-1664"],"ecosystem":"npm","epss":0.00465,"exploited":false,"fixed_versions":["0.3.7"],"ghsa_id":"GHSA-r7x9-8ph7-w8cg","id":"tcs_01M5KG8DBAQHQ7VN1RRQEMCP3X","modified_at":"2026-02-22T23:26:19.292614Z","published_at":"2026-02-03T18:42:01Z","references":["https://osv.dev/vulnerability/GHSA-r7x9-8ph7-w8cg","https://github.com/cloudflare/agents/security/advisories/GHSA-r7x9-8ph7-w8cg","https://nvd.nist.gov/vuln/detail/CVE-2026-1664","https://github.com/cloudflare/agents","https://github.com/cloudflare/agents/blob/main/docs/email.md"],"severity":{"label":"medium","score":6.9},"sources":[{"source":"osv","source_id":"GHSA-r7x9-8ph7-w8cg","url":"https://osv.dev/vulnerability/GHSA-r7x9-8ph7-w8cg"},{"source":"nvd","source_id":"CVE-2026-1664","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-1664"}],"summary":"Cloudflare Agents SDK has Insecure Direct Object Reference (IDOR) via Header-Based Email Routing"}