GHSA-h6w2-rfp5-4jxxHighCVSS 7.5
ExcelJS through 4.4.0 contains a memory exhaustion vulnerability that allows attackers to crash...
🔗 CVE IDs covered (1)
📋 Description
ExcelJS through 4.4.0 contains a memory exhaustion vulnerability that allows attackers to crash applications by supplying a workbook with an oversized defined-name range. DefinedNames.addEx expands ranges such as S!$A$1:$XFD$1048576 from xl/workbook.xml cell by cell, causing an uncatchable fatal heap out-of-memory error during xlsx.load().
🔗 References (7)
- https://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-qvh4-wwpm-ggc8
- https://nvd.nist.gov/vuln/detail/CVE-2026-128340
- https://github.com/exceljs/exceljs
- https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/defined-names.js#L182-L193
- https://github.com/exceljs/exceljs/blob/v4.4.0/lib/utils/cell-matrix.js#L28-L37
- https://www.vulncheck.com/advisories/exceljs-through-4.4.0-memory-exhaustion-via-oversized-defined-name-range
- https://github.com/advisories/GHSA-h6w2-rfp5-4jxx