Authorization bypass through user-controlled key in EspoCRM - CVE-2026-113643
Published: November 11, 2026
Vulnerability identifier: #VU165938
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-113643
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to view image attachments belonging to other users or records without authorization.
The vulnerability exists due to authorization bypass through user-controlled attachment identifiers in EspoCRM PDF rendering when processing image references in PDF templates. A remote user can create or modify a PDF template to reference a known attachment ID and generate a PDF to retrieve an otherwise inaccessible image.
Affected software
EspoCRM
How to mitigate CVE-2026-113643
Install security update from vendor's website.
EspoCRM - update to 10.1.0