CVE-2026-86016

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86016", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-04T19:23:40.691Z", "datePublished": "2026-10-13T19:15:21.682Z", "dateUpdated": "2026-10-29T14:44:07.158Z"}, "containers": {"cna": {"title": "VNote: Stored XSS via YAML Frontmatter Leading to Local File Read and Remote Exfiltration", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x"}, {"name": "https://github.com/vnotex/vnote/commit/7371efde531312eb24beb982fb5fdd73469cb171", "tags": ["x_refsource_MISC"], "url": "https://github.com/vnotex/vnote/commit/7371efde531312eb24beb982fb5fdd73469cb171"}, {"name": "https://github.com/vnotex/vnote/releases/tag/v4.3.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/vnotex/vnote/releases/tag/v4.3.0"}], "affected": [{"vendor": "vnotex", "product": "vnote", "versions": [{"version": "< 4.3.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-13T19:15:21.682Z"}, "descriptions": [{"lang": "en", "value": "VNote is a note-taking platform. Prior to 4.3.0, VNote uses the assignment `preNode.innerHTML = p_metaData` in src/data/extra/web/js/markdownit.js to insert YAML frontmatter metadata into a pre element before the protectFromXss sanitization path runs. Opening an attacker-supplied Markdown note can therefore execute stored JavaScript in the file:// viewer context. Because QWebEngineSettings::LocalContentCanAccessRemoteUrls enables local content to access remote URLs, the script can read reachable local note files and transmit their contents to a remote server without further interaction after the note is opened. This issue is fixed in version 4.3.0."}], "source": {"advisory": "GHSA-vfhj-c636-h59x", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-29T14:44:00.818443Z", "id": "CVE-2026-86016", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-29T14:44:07.158Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-86016", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-29T14:44:00.818443Z"}}}], "references": [{"url": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-29T14:43:45.476Z"}}], "cna": {"title": "VNote: Stored XSS via YAML Frontmatter Leading to Local File Read and Remote Exfiltration", "source": {"advisory": "GHSA-vfhj-c636-h59x", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "vnotex", "product": "vnote", "versions": [{"status": "affected", "version": "< 4.3.0"}]}], "references": [{"url": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x", "name": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/vnotex/vnote/commit/7371efde531312eb24beb982fb5fdd73469cb171", "name": "https://github.com/vnotex/vnote/commit/7371efde531312eb24beb982fb5fdd73469cb171", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/vnotex/vnote/releases/tag/v4.3.0", "name": "https://github.com/vnotex/vnote/releases/tag/v4.3.0", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "VNote is a note-taking platform. Prior to 4.3.0, VNote uses the assignment `preNode.innerHTML = p_metaData` in src/data/extra/web/js/markdownit.js to insert YAML frontmatter metadata into a pre element before the protectFromXss sanitization path runs. Opening an attacker-supplied Markdown note can therefore execute stored JavaScript in the file:// viewer context. Because QWebEngineSettings::LocalContentCanAccessRemoteUrls enables local content to access remote URLs, the script can read reachable local note files and transmit their contents to a remote server without further interaction after the note is opened. This issue is fixed in version 4.3.0."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-13T19:15:21.682Z"}}}, "cveMetadata": {"cveId": "CVE-2026-86016", "state": "PUBLISHED", "dateUpdated": "2026-10-29T14:44:07.158Z", "dateReserved": "2026-09-04T19:23:40.691Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-10-13T19:15:21.682Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "vnote", "vendor": "vnotex", "versions": [{"status": "affected", "version": "< 4.3.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "VNote is a note-taking platform. Prior to 4.3.0, VNote uses the assignment `preNode.innerHTML = p_metaData` in src/data/extra/web/js/markdownit.js to insert YAML frontmatter metadata into a pre element before the protectFromXss sanitization path runs. Opening an attacker-supplied Markdown note can therefore execute stored JavaScript in the file:// viewer context. Because QWebEngineSettings::LocalContentCanAccessRemoteUrls enables local content to access remote URLs, the script can read reachable local note files and transmit their contents to a remote server without further interaction after the note is opened. This issue is fixed in version 4.3.0."}], "id": "CVE-2026-86016", "lastModified": "2026-10-29T15:17:25.207", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-86016", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-29T14:44:00.818443Z", "version": "2.0.3"}}]}, "published": "2026-10-13T20:18:55.303", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/vnotex/vnote/commit/7371efde531312eb24beb982fb5fdd73469cb171"}, {"source": "security-advisories@github.com", "url": "https://github.com/vnotex/vnote/releases/tag/v4.3.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/vnotex/vnote/security/advisories/GHSA-vfhj-c636-h59x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.3.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "vnote", "source": "cna", "vendor": "vnotex"}, "product": "vnote", "vendor": "vnotex"}], "created": "2026-10-14T13:30:07.492548+00:00", "updated": "2026-10-18T14:15:14.174397+00:00", "vendors": ["vnotex", "vnotex$PRODUCT$vnote"]}