---
id: CVE-2026-55154
title: EspoCRM is an open source customer relationship management application
summary: >-
  EspoCRM is an open source customer relationship management application. Prior
  to 9.3.9, application/Espo/Tools/Export/Format/Csv/Processor.php,
  application/Espo/Tools/Export/Format/Xlsx/OpenSpoutProcessor.php, and
  application/Espo/Tools/…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-1236
vendor: espocrm
product: espocrm
affected:
  - espocrm < 9.3.9
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T15:17:35.743'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55154'
references:
  - url: >-
      https://github.com/espocrm/espocrm/commit/f209248efd0d63bc8f7906cb96c07020a758eead
    label: security-advisories@github.com
  - url: 'https://github.com/espocrm/espocrm/releases/tag/9.3.9'
    label: security-advisories@github.com
  - url: 'https://github.com/espocrm/espocrm/security/advisories/GHSA-xrwp-2gph-985x'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-15T15:09:08.428Z'
---

## Overview

EspoCRM is an open source customer relationship management application. Prior to 9.3.9, application/Espo/Tools/Export/Format/Csv/Processor.php, application/Espo/Tools/Export/Format/Xlsx/OpenSpoutProcessor.php, and application/Espo/Tools/Export/Format/Xlsx/PhpSpreadsheetProcessor.php inspect only the first byte in sanitizeCellValue(). An authenticated low-privileged user can store a free-text value whose formula trigger is preceded by whitespace or a control character, causing CSV or XLSX export to omit the leading single-quote formula-neutralization prefix. When a privileged user opens the exported file and accepts applicable spreadsheet security prompts, spreadsheet software can ignore the whitespace or control-character prefix and evaluate the cell as a formula, permitting outbound data disclosure and, on legacy configurations with DDE enabled, command execution. This issue is fixed in version 9.3.9.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.