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    CVE-2026-55154

    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.

    Published:Oct 15, 2026
    Last Modified:Oct 17, 2026
    EPS:Oct 15, 2026
    EPSS Score:0.0021
    CVSS Score:5.4

    Affected Products

    Vendor
    Espocrm
    Product
    Espocrm

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-77460 (CVSS 6.5) — EspoCRM is an open source customer relationship management application. Prior to 10.0.3, a user with email-tem…
    CVE-2026-63130 (CVSS 5.5) — EspoCRM is an open source customer relationship management application. Prior to 9.3.10, an authenticated admi…
    CVE-2026-59994 (CVSS 4.3) — EspoCRM is an open source customer relationship management application. Prior to 9.3.9, an unauthenticated rem…
    CVE-2026-55184 (CVSS 3.5) — EspoCRM is an open source customer relationship management application. Prior to 9.3.9, a user with Email Temp…
    CVE-2026-53575 (CVSS 2.7) — EspoCRM is an open source customer relationship management application. Prior to 9.3.9, an authenticated admin…
    CVE-2026-53574 (CVSS 7.6) — EspoCRM is an open source customer relationship management application. From 8.1.0 until 9.3.8, an authenticat…
    CVE-2026-46691 (CVSS 6.5) — EspoCRM is an open source customer relationship management application. Prior to 9.3.7, an authenticated user …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High