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Vulnerability record · CVE-2026-33656 · published 22 April 2026

CVE-2026-33656: Espocrm path traversal vulnerability

Espocrm · Espocrm

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.

9.1 CVSS 3.1 Critical EPSS 0.60% · top 53.3% CWE-22 · Path traversal
9.1CVSS 3.1 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x ExploitVendor Advisory
https://github.com/espocrm/espocrm/security/advisories/GHSA-7922-x7cf-j54x ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2014-7985Espocrm path traversal vulnerabilityDirectory traversal vulnerability in EspoCRM before 2.6.0 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in …EPSS 5.0%8.8CVE-2022-38843Espocrm unrestricted file upload vulnerabilityEspoCRM version 7.1.8 is vulnerable to Unrestricted File Upload allowing attackers to upload malicious file with any extension to the server. Attacke…EPSS 1.3%8.8CVE-2019-14351Espocrm improper restriction of authentication attempts vulnerabilityEspoCRM 5.6.4 is vulnerable to user password hash enumeration. A malicious authenticated attacker can brute-force a user password hash by 1 symbol at…EPSS 1.3%8.6CVE-2020-37094Espocrm vulnerabilityEspoCRM 5.7.0 prior to 5.9.0 contains an authentication token reuse vulnerability that allows authenticated attackers to bypass two-factor authentica…EPSS 0.48%8.0CVE-2022-38844Espocrm csv injection vulnerabilityCSV Injection in Create Contacts in EspoCRM 7.1.8 allows remote authenticated users to run system commands via creating contacts with payloads capabl…EPSS 1.3%7.2CVE-2026-33733Espocrm relative path traversal vulnerabilityEspoCRM is an open source customer relationship management application. Prior to version 9.3.4, the admin template management endpoints accept attack…EPSS 0.60%7.2CVE-2023-5966Espocrm unrestricted file upload vulnerabilityAn authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, …EPSS 1.0%7.2CVE-2023-5965Espocrm unrestricted file upload vulnerabilityAn authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the update form, which could le…EPSS 1.0%

Source: NIST National Vulnerability Database (record CVE-2026-33656), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.