{"schema":"threatline.record/2","record":{"id":"CVE-2026-76066","aliases":[],"summary":"IntentKit 2.6.3 Executor Tool Authorization Bypass via ToolNode","details":"IntentKit through 2.6.3, fixed in commit 5b91da5, contains an authorization bypass vulnerability where the executor validates tool calls against the full tool registry rather than the per-request narrowed tool advertisement enforced by ToolBindingMiddleware, allowing owner-only state-changing tools such as wallet transfer, posting, memory-write, and call-agent to execute without any human-in-the-loop or approval gate. An unauthenticated or public caller in WEB, API, TWITTER, or TELEGRAM contexts can exploit this by supplying the exact de-advertised tool name and arguments via indirect prompt injection or by replaying checkpoint and history data on a reused thread, achieving unauthorized execution of owner-restricted capabilities.","categories":["Unclassified"],"product":"intentkit","vendor":"crestalnetwork","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-76066","source_modified_at":"2026-10-22T16:32:28.459Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"intentkit","vendor":"crestalnetwork","versions":[{"status":"affected","version":"0","versionType":"semver","lessThanOrEqual":"2.6.3"},{"status":"unaffected","version":"5b91da5734d1ac16cd656fa66a86caf8f15cd671","versionType":"git"}],"defaultStatus":"unknown"}],"fixed_versions":[],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00441,"percentile":0.37329,"score_date":"2026-10-23"},"published_at":"2026-10-15T01:39:56.474Z","modified_at":"2026-10-22T16:32:28.459Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-76066","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-22T16:32:28.459Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-76066","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.lasso.security/vulnerability-database/cve-2026-76066","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/crestalnetwork/intentkit/commit/5b91da5734d1ac16cd656fa66a86caf8f15cd671","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/intentkit-executor-tool-authorization-bypass-via-toolnode"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-15T13:21:43.474539Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-22T16:32:28.459Z","content_hash":"b577b2df09792078d5526c0d3f496b2754db7f3f51d1f0aeed3546e5e4ef9490"}}