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CVE-2026-66922— Pivotick Prototype-Key Collision in Tree Layout and Cycle Detection Allows Graph Manipulation and Denial of Service

Quick assessment

Affected
pivotick pivotick
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.

Pivotick Pivotick是Pivotick组织开源的一款企业应用软件。 Pivotick 1.4.0及之前版本存在输入验证错误漏洞，该漏洞源于tree-layout和cycle-detection组件使用普通JavaScript对象作为查找表，节点标识符与Object.prototype属性冲突，导致原型污染，并可能引发客户端拒绝服务。

CVSS 5.1 · Medium EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
pivotick pivotick ≤ 1.4.0 affected
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I. Basic Information for CVE-2026-66922

Vulnerability Information
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Vulnerability Title
Pivotick Prototype-Key Collision in Tree Layout and Cycle Detection Allows Graph Manipulation and Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
Pivotick used plain JavaScript objects as lookup tables indexed by caller-controlled graph node identifiers in its tree-layout and cycle-detection components. Node identifiers matching properties inherited from Object.prototype, such as constructor, toString, or __proto__, were not handled as ordinary identifiers. These values could be interpreted as existing inherited properties, resolve to values of an unexpected type, or—in the case of __proto__ assignments—modify the prototype of an internal lookup object. An attacker who can supply graph data containing crafted node identifiers could consequently cause nodes or edges to be silently omitted, produce incorrect hierarchy levels, bypass or corrupt cycle-detection results, or trigger an exception that interrupts graph processing and rendering. This affects the integrity of graph visualisations and analytics and may cause a client-side denial-of-service condition. The affected code also failed to safely handle edges whose source node was absent from the supplied node set. Furthermore, calculating the maximum tree depth by spreading all level values into Math.max() could exceed the JavaScript function-argument limit when processing a sufficiently large graph, resulting in an exception and denial of service. The patch replaces identifier-keyed plain objects with Map instances, ignores invalid edges during tree construction, and calculates the maximum depth iteratively.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5
Vulnerability Title
Pivotick 输入验证错误漏洞
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及之前版本存在输入验证错误漏洞，该漏洞源于tree-layout和cycle-detection组件使用普通JavaScript对象作为查找表，节点标识符与Object.prototype属性冲突，导致原型污染，并可能引发客户端拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
pivotick pivotick 0 ~ 1.4.0 -

II. Public POCs for CVE-2026-66922

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III. Intelligence Information for CVE-2026-66922

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Patches & Fixes for CVE-2026-66922 (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-2026-66920 8.2 HIGH Pivotick - Stack Exhaustion Denial of Service via Deep or Cyclic Graph Data
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-2026-67173 5.1 MEDIUM Pivotick Unvalidated Node Image URLs Allow Unintended Client-Side Requests

IV. Related Vulnerabilities

Same product: pivotick
Same vendor: pivotick
Same weakness: CWE-1321

V. Comments for CVE-2026-66922

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