[CVE-2026-78209] exceljs-hardened versions before 5.0.0 fail to neutralize leading equals, plus, minus, or at signs i…

Descripción técnica

exceljs-hardened versions before 5.0.0 fail to neutralize leading equals, plus, minus, or at signs in cell values written to CSV output. Attackers who can influence exported cell values can inject formulas that execute when the CSV file is opened in a spreadsheet application, potentially exfiltrating data or performing other malicious actions.

Puntuación CVSS

Score: 8.2/10 — Severidad: HIGH — Estado NIST: Received

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Debilidades (CWE)

CWE-1236

Fuente oficial

Publicado en NIST NVD.