CVE-2026-66920— Pivotick - Stack Exhaustion Denial of Service via Deep or Cyclic Graph Data
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I. Basic Information for CVE-2026-66920
Vulnerability Information
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Vulnerability Title
Pivotick - Stack Exhaustion Denial of Service via Deep or Cyclic Graph Data
Source: CVE Program / CVE List V5
Vulnerability Description
Pivotick contains an uncontrolled-recursion vulnerability when processing caller-supplied graph and node data. The affected graph algorithms recursively traversed graph edges, while the JSON viewer recursively processed each level of a node’s data structure. A specially crafted graph containing an excessively long path, deeply nested properties, or circular object references could therefore exhaust the JavaScript call stack when Pivotick calculates a layout or displays a node in the inspection modal. Successful exploitation may cause an uncaught exception, freeze the affected page, or crash the browser tab, resulting in a client-side denial of service. No confidentiality or integrity impact has been identified. The patch replaces the recursive graph traversals with iterative stack-based implementations and limits the reachability calculation to 1,000,000 edge traversals. It also limits JSON rendering to 64 levels and detects circular references before descending further into an object.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
Pivotick 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pivotick Pivotick是Pivotick组织开源的一款企业应用软件。 Pivotick 1.4.0及之前版本存在资源管理错误漏洞，该漏洞源于不受控制的递归，在处理用户提供的图形和节点数据时，图算法递归遍历边且JSON查看器递归处理节点数据结构，可能导致攻击者利用特制图形导致JavaScript调用栈耗尽，造成客户端拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-66920
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCVerified env Premium
Reproduced successfully in a real sandbox· Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker:
VULNERABLE: RangeError: Maximum call stack size exceeded — uncontrolled recursion on deep graph data exhausted the JS call stack (client-side DoS)Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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III. Intelligence Information for CVE-2026-66920
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Patches & Fixes for CVE-2026-66920 (1)
Same Patch Batch · Pivotick · 2026-07-28 · 7 CVEs total
| CVE-2026-67174 | 9.2 CRITICAL | DOM-Based Cross-Site Scripting via Unsafe String and SVG Icon Rendering in Pivotick |
| CVE-2026-66918 | 8.2 HIGH | DOM-Based Cross-Site Scripting via Unsanitized SVG Node Icons |
| CVE-2026-66919 | 6.9 MEDIUM | Stored DOM-Based Cross-Site Scripting in Node Modal Headers |
| CVE-2026-66921 | 6.3 MEDIUM | Pivotick - Stored DOM-Based Cross-Site Scripting via Unescaped Markdown Node References |
| CVE-2026-66922 | 5.1 MEDIUM | Pivotick Prototype-Key Collision in Tree Layout and Cycle Detection Allows Graph Manipulat |
| CVE-2026-67173 | 5.1 MEDIUM | Pivotick Unvalidated Node Image URLs Allow Unintended Client-Side Requests |
IV. Related Vulnerabilities
Same product: Pivotick
- CVE-2026-67174
DOM-Based Cross-Site Scripting via Unsafe String and SVG Ico - CVE-2026-67173
Pivotick Unvalidated Node Image URLs Allow Unintended Client - CVE-2026-66922
Pivotick Prototype-Key Collision in Tree Layout and Cycle De - CVE-2026-66921
Pivotick - Stored DOM-Based Cross-Site Scripting via Unescap - CVE-2026-66919
Stored DOM-Based Cross-Site Scripting in Node Modal Headers
Same vendor: Pivotick
- CVE-2026-67174
DOM-Based Cross-Site Scripting via Unsafe String and SVG Ico - CVE-2026-67173
Pivotick Unvalidated Node Image URLs Allow Unintended Client - CVE-2026-66922
Pivotick Prototype-Key Collision in Tree Layout and Cycle De - CVE-2026-66921
Pivotick - Stored DOM-Based Cross-Site Scripting via Unescap - CVE-2026-66919
Stored DOM-Based Cross-Site Scripting in Node Modal Headers
Same weakness: CWE-674
- CVE-2026-63462
Unleash: Unauthenticated single-request DoS via OpenAPI vali - CVE-2026-54623
django CMS: Plugin move endpoint allows cyclic reparenting ( - CVE-2026-40345
deepmerge-ts: Stack exhaustion when merging recursive object - CVE-2026-16440
Eclipse OpenJ9≤0.60.class文件段错误漏洞 - CVE-2026-69220
RabbitMQ Java client ValueReader: Unbounded recursive table/
V. Comments for CVE-2026-66920
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