CVE-2026-66918 in Pivotick
Summary
by MITRE • 07/28/2026
Pivotick fails to sanitize attacker-controlled SVG markup supplied through the per-node style.svgIcon property before inserting it into the document.
When rendering a graph node, the vulnerable code assigns the SVG icon markup directly to the innerHTML property of a live SVG element. An attacker able to influence graph data can provide crafted markup containing executable event handlers, such as an <image> element with an onerror attribute.
When a victim loads or renders the malicious graph, the payload may execute arbitrary JavaScript in the security context of the application embedding Pivotick. Successful exploitation could allow the attacker to access application data available to the victim, modify displayed content, or perform actions using the victim’s authenticated session.
Exploitation requires an application using Pivotick to render graph data that is controlled or modified by an attacker.
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical cross-site scripting flaw in Pivotick that stems from improper input sanitization of SVG markup within the per-node style.svgIcon property. The security issue manifests when the application processes user-supplied graph data containing malicious SVG content, specifically targeting the innerHTML assignment mechanism used for rendering node icons. The root cause lies in the application's failure to validate or sanitize attacker-controlled SVG elements before incorporating them into the document DOM, creating an avenue for code injection attacks that bypass traditional security controls.
The technical implementation of this vulnerability involves direct assignment of unfiltered SVG markup to the innerHTML property of live SVG elements during graph rendering operations. When an attacker crafts malicious SVG content with embedded event handlers such as onerror attributes within image elements, these payloads execute automatically upon document rendering. The attack vector leverages the browser's native SVG processing capabilities where event handlers defined in SVG markup can trigger JavaScript execution without requiring additional exploitation primitives. This flaw operates at the intersection of DOM-based XSS and SVG security considerations, making it particularly dangerous as it can bypass Content Security Policy mechanisms that typically protect against script injection.
The operational impact of successful exploitation extends beyond simple code execution to encompass complete session hijacking and data exfiltration capabilities. Victims who load or render malicious graphs will experience automatic payload execution in the application's security context, potentially allowing attackers to access sensitive application data, modify displayed content, or perform authenticated actions on behalf of legitimate users. This vulnerability undermines the trust model of applications using Pivotick for graph visualization, as it enables attackers to compromise user sessions and gain unauthorized access to protected resources within the application environment.
Security mitigations for this vulnerability should focus on implementing comprehensive input sanitization measures that validate and filter all SVG content before DOM insertion. Organizations should implement strict SVG whitelisting policies that only permit safe attributes and elements while stripping or escaping potentially dangerous constructs such as event handlers, script tags, and external references. The implementation of Content Security Policy directives specifically designed to restrict inline script execution within SVG contexts can provide additional defense layers. This vulnerability aligns with CWE-79 (Cross-site Scripting) and CWE-159 (Improper Sanitization of Special Elements) classifications while mapping to ATT&CK technique T1203 (Exploitation for Client Execution) and T1566 (Phishing). Regular security testing including SVG input validation checks should be incorporated into the application's security assessment procedures to prevent similar vulnerabilities from persisting in production environments.