CVE-2026-33656

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x	Exploit Vendor Advisory
https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-22 21:17

Updated : 2026-06-17 10:37

NVD link : CVE-2026-33656

Mitre link : CVE-2026-33656

CVE.ORG link : CVE-2026-33656

JSON object : View

Products Affected

espocrm

espocrm

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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