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CVE-2026-76066— IntentKit 2.6.3 Executor Tool Authorization Bypass via ToolNode

Quick assessment

Affected
crestalnetwork intentkit
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IntentKit 在 2.6.3 及更早版本中存在一个授权绕过漏洞。该漏洞的根源在于执行器（executor）在对工具调用进行权限验证时，使用的是完整的工具注册表，而非由 ToolBindingMiddleware 为每个请求动态限制和声明的“子集工具”（per-request narrowed tool advertisement）。因此，一些仅限所有者（owner-only）的状态变更型工具（如钱包转账、发布内容、内存写入以及调用智能体等）可以在没有任何人工介入（human-in-the-loop）或审批机制

CVSS 7.5 · High EPSS 0.39% · P31

Affected Version Matrix 1

VendorProduct Version RangeStatus
crestalnetwork intentkit ≤ 2.6.3 affected
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I. Basic Information for CVE-2026-76066

Vulnerability Information
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Vulnerability Title
IntentKit 2.6.3 Executor Tool Authorization Bypass via ToolNode
Source: CVE Program / CVE List V5
Vulnerability Description
IntentKit through 2.6.3 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
crestalnetwork intentkit 0 ~ 2.6.3 -

II. Public POCs for CVE-2026-76066

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III. Intelligence Information for CVE-2026-76066

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Other References for CVE-2026-76066 (1)

Other References for CVE-2026-76066 (1)

IV. Related Vulnerabilities

Same weakness: CWE-862

V. Comments for CVE-2026-76066

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