{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66921", "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8", "state": "PUBLISHED", "assignerShortName": "CIRCL", "dateReserved": "2026-07-28T13:05:10.153Z", "datePublished": "2026-07-28T13:05:19.166Z", "dateUpdated": "2026-07-28T14:18:44.783Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "pivotick", "repo": "https://github.com/Pivotick/Pivotick", "vendor": "pivotick", "versions": [{"lessThanOrEqual": "1.4.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Jeroen Pinoy"}, {"lang": "en", "type": "remediation developer", "value": "Sami Mokaddem"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Pivotick\u2019s Markdown node-reference renderer failed to HTML-escape the attacker-controlled <code>nodeName</code> value before interpolating it into both the <code>data-node-name</code> attribute and the body of a generated <code>&lt;span&gt;</code> element.</p><p>Because the node-reference tokenizer rejected only square brackets, a crafted node name could still contain quotation marks, angle brackets, or other HTML metacharacters. An attacker could therefore terminate the quoted attribute or inject additional HTML elements and event-handler attributes.</p><p>When malicious node-reference content is rendered by a consumer that does not apply DOMPurify or equivalent sanitization, arbitrary JavaScript may execute in the victim\u2019s browser in the security context of the application. Successful exploitation requires a victim to open or render a crafted graph or note and could allow the attacker to access same-origin information, modify displayed content, or perform actions using the victim\u2019s session.</p><p>The patch resolves the issue by applying context-appropriate HTML escaping to node names before inserting them into either HTML text or quoted attribute values. 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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-66921", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-28T14:18:36.415287Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-28T14:18:39.519Z"}}], "cna": {"title": "Pivotick - Stored DOM-Based Cross-Site Scripting via Unescaped Markdown Node References", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Jeroen Pinoy"}, {"lang": "en", "type": "remediation developer", "value": "Sami Mokaddem"}], "impacts": [{"capecId": "CAPEC-243", "descriptions": [{"lang": "en", "value": "CAPEC-243 XSS Targeting HTML Attributes"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:H/SA:H", "providerUrgency": "NOT_DEFINED", "userInteraction": "ACTIVE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/Pivotick/Pivotick", "vendor": "pivotick", "product": "pivotick", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.4.0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/Pivotick/Pivotick/commit/4c13ff2b0ec769881b5526feddef37c0c5a08885", "tags": ["patch"]}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "value": "Pivotick\u2019s Markdown node-reference renderer failed to HTML-escape the attacker-controlled nodeName value before interpolating it into both the data-node-name attribute and the body of a generated <span> element.\n\nBecause the node-reference tokenizer rejected only square brackets, a crafted node name could still contain quotation marks, angle brackets, or other HTML metacharacters. 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