{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-78208", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-08-24T00:15:01.656Z", "datePublished": "2026-08-24T00:30:47.795Z", "dateUpdated": "2026-08-24T00:30:47.795Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-08-24T00:30:47.795Z"}, "datePublic": "2026-08-23T00:00:00.000Z", "title": "exceljs through 4.4.0 Path Traversal via Unvalidated addImage filename", "descriptions": [{"lang": "en", "value": "exceljs-hardened before 5.0.0 contains a path traversal vulnerability in the Workbook.addImage() function that fails to validate file paths. Attackers can supply arbitrary file paths to read any file accessible to the Node.js process and embed it in the generated workbook."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "External Control of File Name or Path", "cweId": "CWE-73", "type": "CWE"}]}], "affected": [{"vendor": "exceljs", "product": "exceljs", "collectionURL": "https://www.npmjs.com/package/exceljs", "packageName": "exceljs", "packageURL": "pkg:npm/exceljs", "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThanOrEqual": "4.4.0", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:exceljs_project:exceljs:*:*:*:*:*:*:*:*", "versionEndIncluding": "4.4.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/exceljs/exceljs", "tags": ["product"]}, {"url": "https://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-m8mg-8574-gm3m", "tags": ["third-party-advisory"]}, {"url": "https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/workbook.js#L142-L147", "tags": ["technical-description"]}, {"url": "https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xlsx.js#L421-L429", "tags": ["technical-description"]}, {"name": "VulnCheck Advisory: exceljs through 4.4.0 Path Traversal via Unvalidated addImage filename", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/exceljs-through-path-traversal-via-unvalidated-addimage-filename"}], "credits": [{"lang": "en", "value": "Mat\u00e9o Florian Callec", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{"created": "2026-08-24T01:30:04.791596+00:00", "updated": "2026-08-24T01:30:04.791602+00:00", "vendors": []}