{"schema":"threatline.record/2","record":{"id":"CVE-2026-59563","aliases":[],"summary":"HMAC Confirmation Token Unbinding in zscaler-mcp-server","details":"Zscaler MCP Server versions 0.7.0 and 0.7.1 has an issue where HMAC confirmation tokens were not bound to the target resource identifier, allowing an MCP client or agent to replay a token generated for one resource to affect another resource of the same type. This issue is fixed in version 0.7.2.","categories":["Unclassified"],"product":"zscaler-mcp-server","vendor":"Zscaler","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-59563","source_modified_at":"2026-09-28T13:31:27.587Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"zscaler-mcp-server","vendor":"Zscaler","versions":[{"status":"affected","version":"0.7.0","lessThan":"0.7.2","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-59563","source_modified_at":"2026-09-28T13:31:27.587Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zscaler-mcp-server","ecosystem":null},"version":"0.7.2","basis":"first unaffected version stated in the CVE record"}],"cvss":4.6,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00131,"percentile":0.02443,"score_date":"2026-10-23"},"published_at":"2026-09-28T12:54:52.446Z","modified_at":"2026-09-28T13:31:27.587Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-59563","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-28T13:31:27.587Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-59563","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/zscaler/zscaler-mcp-server/pull/41"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-28T13:18:33.827712Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-28T13:31:27.587Z","content_hash":"760da392d0a125f2c6510fc3f3ef4fcd5d43d9b82e98b5b1cf4f48fb4de1cb74"}}