{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55154", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T15:13:28.165Z", "datePublished": "2026-10-15T14:49:15.584Z", "dateUpdated": "2026-10-16T17:13:56.910Z"}, "containers": {"cna": {"title": "EspoCRM: CSV/Formula Injection sanitizer bypass via leading whitespace/control characters in export", "problemTypes": [{"descriptions": [{"cweId": "CWE-1236", "lang": "en", "description": "CWE-1236: Improper Neutralization of Formula Elements in a CSV File", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/espocrm/espocrm/security/advisories/GHSA-xrwp-2gph-985x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/espocrm/espocrm/security/advisories/GHSA-xrwp-2gph-985x"}, {"name": "https://github.com/espocrm/espocrm/commit/f209248efd0d63bc8f7906cb96c07020a758eead", "tags": ["x_refsource_MISC"], "url": "https://github.com/espocrm/espocrm/commit/f209248efd0d63bc8f7906cb96c07020a758eead"}, {"name": "https://github.com/espocrm/espocrm/releases/tag/9.3.9", "tags": ["x_refsource_MISC"], "url": "https://github.com/espocrm/espocrm/releases/tag/9.3.9"}], "affected": [{"vendor": "espocrm", "product": "espocrm", "versions": [{"version": "< 9.3.9", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-15T14:49:15.584Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-xrwp-2gph-985x", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-15T20:24:34.482538Z", "id": "CVE-2026-55154", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T17:13:56.910Z"}}]}}

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{}