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.
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Affected Vendors & Products
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History
Thu, 28 May 2026 18:45:00 +0000
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Espocrm
Espocrm espocrm |
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Espocrm
Espocrm espocrm |
Thu, 28 May 2026 17:00:00 +0000
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| 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. | |
| Title | EspoCRM: Broken Access Control / IDOR in Note Pinning API allows unauthorized modification of notes | |
| Weaknesses | CWE-284 CWE-639 CWE-862 |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-28T16:24:19.970Z
Reserved: 2026-04-17T16:34:45.524Z
Link: CVE-2026-41160
No data.
Status : Received
Published: 2026-05-28T17:16:22.053
Modified: 2026-05-28T17:16:22.053
Link: CVE-2026-41160
No data.
OpenCVE Enrichment
Updated: 2026-05-28T18:30:23Z