Input validation error in EspoCRM - CVE-2025-52892
Published: April 23, 2026
Vulnerability identifier: #VU126930
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-52892
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: EspoCRM
Affected software:
EspoCRM
EspoCRM
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper input handling in the Slim router cache when processing a URI containing a double slash. A remote privileged user can load the application in a browser with a double-slash URI to cause a denial of service.
The issue occurs if the web server does not strip the double slash, and user interaction is required to load the crafted URI.
How to mitigate CVE-2025-52892
Install security update from vendor's website.