CVE-2026-33656

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 Software

Weaknesses

• CWE-22: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x

References

• https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x

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