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CVE-2026-78208 Details

UNDERGOING ENRICHMENT

The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/exceljs/exceljs	[email protected]
https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/workbook.js#L142-L147	[email protected]
https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xlsx.js#L421-L429	[email protected]
https://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-m8mg-8574-gm3m	[email protected]
https://www.vulncheck.com/advisories/exceljs-through-path-traversal-via-unvalidated-addimage-filename	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-73	External Control of File Name or Path	[email protected]

Affected Products

This vulnerability is currently being analyzed

Change History

4 change records found show changes

Date	Action	Recorded By
Aug 29, 2026	CVE Modified	[email protected]
Aug 26, 2026	CVE Modified	[email protected]
Aug 26, 2026	CVE Modified	CISA-ADP
Aug 24, 2026	New CVE Received	[email protected]