CVE-2026-128348

LOW
INFO Priority: 0.01 BB Relevance: 45/100
Published: 2026-11-13 Modified: 2026-11-13 First seen: 2026-11-13 Status: active

Attack Surface

Network No Auth

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: Passive
S: X
AT: Present
VC: Low
VI: Low
VA: None

Description

ExcelJS through 4.4.0 contains a formula injection vulnerability in the totals row formula getter in lib/doc/table.js that fails to escape [, ], # and ' characters in structured reference column names. Attackers can supply column names containing ] via untrusted input like imported CSV headers to inject formulas such as HYPERLINK that exfiltrate cell values when users open and click the generated workbook.

Affected Software (2)

VendorProductVersion
exceljs exceljs 0
exceljs exceljs 0

Bug Bounty Relevance

45 / 100
✓ Network accessible
✓ No authentication

CVSS Score

2.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/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

EPSS — Exploitation Probability

0.30%
Raw Score 0.002960
Percentile 22.5%
Date 2026-11-13

Intelligence Sources

mitre ref →
nvd ref →