cvedb.io
CVE-2026-33656
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-04-22T21:17:05.330 · Last modified 2026-06-17T10:37:52.333

Summary

EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, EspoCRM's built-in formula scripting engine allowing updating attachment's sourceId thus allowing an authenticated admin to overwrite the `sourceId` field on `Attachment` entities. Because `sourceId` is concatenated directly into a file path with no sanitization in `EspoUploadDir::getFilePath()`, an attacker can redirect any file read or write operation to an arbitrary path within the web server's `open_basedir` scope. Version 9.3.4 fixes the issue.

Affected products

espocrm — espocrm

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.