{"id":"CVE-2026-78208","aliases":[],"cve":{"records":[{"id":"CVE-2026-78208","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-08-24T00:15:01.656Z","published":"2026-08-24T00:30:47.795Z","modified":"2026-11-08T14:09:04.566Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-11-08T14:09:04.566Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-08-26T16:15:40.477Z"}],"references":[{"url":"https://github.com/exceljs/exceljs","tags":["product"],"source":"VulnCheck"},{"url":"https://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-m8mg-8574-gm3m","tags":["third-party-advisory","vendor-advisory"],"source":"VulnCheck"},{"url":"https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/workbook.js#L142-L147","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xlsx.js#L421-L429","tags":["technical-description"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/exceljs-through-path-traversal-via-unvalidated-addimage-filename","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-73","description":"External Control of File Name or Path","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:exceljs_project:exceljs:*:*:*:*:*:*:*:*","versionEndIncluding":"4.4.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-08-26T15:58:24.664489Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"exceljs through 4.4.0 Path Traversal via Unvalidated addImage filename","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"exceljs through 4.4.0 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workbook.","score":8.7,"severity":"high","published":"2026-08-24T00:30:47.795Z","modified":"2026-11-08T14:09:04.566Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"exceljs","name":"exceljs","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.4.0","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:npm/exceljs","packageIdentity":{"ecosystem":"npm","name":"exceljs"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-78208"}],"remediation":[],"references":["https://github.com/exceljs/exceljs","https://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-m8mg-8574-gm3m","https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/workbook.js#L142-L147","https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xlsx.js#L421-L429","https://www.vulncheck.com/advisories/exceljs-through-path-traversal-via-unvalidated-addimage-filename"],"sources":[{"name":"CVE","id":"CVE-2026-78208","modified":"2026-11-08T14:09:04.566Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-78208"}],"assessments":[{"source":"VulnCheck","vector":"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","score":8.7},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5}],"sourceAffected":[],"observedAt":"2026-11-08T14:31:52.541Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:20:33.177Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-08T15:05:35.560Z","attemptedAt":"2026-11-08T15:05:35.560Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-08T15:05:35.650Z","attemptedAt":"2026-11-08T15:05:35.650Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-08T15:05:35.809Z","attemptedAt":"2026-11-08T15:05:35.809Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-08T15:05:35.490Z","attemptedAt":"2026-11-08T15:05:35.490Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-78208","url":"https://www.first.org/epss/","probability":0.00508,"percentile":0.43685,"date":"2026-11-08","checkedAt":"2026-11-08T15:05:35.490Z"},{"source":"NVD","id":"CVE-2026-78208","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78208","modified":"2026-10-14T13:10:00.187","score":8.7,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-11-08T15:05:35.560Z"},{"source":"NVD","id":"CVE-2026-78208","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78208","modified":"2026-10-14T13:10:00.187","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-11-08T15:05:35.560Z"},{"source":"GitHub Advisory Database","id":"GHSA-vw3h-4fh6-vvqq","url":"https://github.com/advisories/GHSA-vw3h-4fh6-vvqq","modified":"2026-08-24T03:31:14Z","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","checkedAt":"2026-11-08T15:05:35.650Z"},{"source":"ENISA EUVD","id":"EUVD-2026-64683","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-64683","modified":"Nov 8, 2026, 2:09:04 PM","score":8.7,"vector":"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","checkedAt":"2026-11-08T15:05:35.809Z"}],"aiSummary":{"text":"exceljs through 4.4.0 has a path traversal vulnerability in Workbook.addImage(), allowing attackers to read files accessible to the Node.js process. The vulnerability is due to unvalidated filename input. Attackers can embed arbitrary files in the generated workbook.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-08T14:41:09.362Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-78208"}]}}