CVE-2026-41160 Details
Description
EspoCRM is an open source customer relationship management application. Prior to 9.3.5, a business logic flaw (Broken Access Control) in EspoCRM 9.3.3 allows low-privileged users to pin arbitrary notes without having the required edit permissions for the parent object. Due to a "write first, authorize later" execution flaw in the backend API, even though the server correctly returns a 403 Forbidden error, the targeted note's pinned status is already persistently modified in the database. The root cause lies in the server-side processing of the POST /api/v1/Note/{id}/pin endpoint. In application/Espo/Tools/Stream/Api/PostNotePin.php, the process() method first calls getNote($id) before calling checkParent($note). This vulnerability is fixed in 9.3.5.
A business logic flaw allowing broken access control has been identified in EspoCRM versions 9.3.3 prior to 9.3.5. This vulnerability enables low-privileged users to pin notes arbitrarily without the necessary edit permissions for the associated parent object. The issue arises from a 'write first, authorize later' flaw in the backend API, specifically in the POST /api/v1/Note/{id}/pin endpoint. Although the server returns a 403 Forbidden error, the pinned status of the note is still changed in the database. The vulnerability allows unauthorized modifications to notes, which could disrupt business workflows by manipulating the visibility and priority of notes on objects the user does not own or have permission to edit.
Users can update to EspoCRM version 9.3.5 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 28, 2026CISA-ADP
Assessed May 28, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/espocrm/espocrm/security/advisories/GHSA-c3rm-m24p-255p | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/espocrm/espocrm/security/advisories/GHSA-c3rm-m24p-255p | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| EspoCRM | <= 9.3.4 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 28, 2026 | CVE Modified | CISA-ADP |
| May 28, 2026 | New CVE Received | [email protected] |