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High 7.5Published Aug 24, 2026
CVE-2026-78208exceljs through 4.4.0 Path Traversal via Unvalidated addImage filename
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-73
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 29, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
exceljs exceljs exceljs:exceljs (from the name) | through 4.4.0 | CNA record |
References
- https://github.com/exceljs/exceljsproduct
- https://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-m8mg-8574-gm3mthird-party-advisory
- https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/workbook.js#L142-L147technical-description
- https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xlsx.js#L421-L429technical-description
- https://www.vulncheck.com/advisories/exceljs-through-path-traversal-via-unvalidated-addimage-filenamethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.