CVE-2025-52892CWE-444

EspoCRM is vulnerable to access denial through double slash in URI corrupting router cache

Medium · published August 5, 2025

CVSS v3.1
4.5
EPSS
0%
Percentile
15.2
In the wild
Unconfirmed
What it is

EspoCRM is a web application with a frontend designed as a single-page application and a REST API backend written in PHP. In versions 9.1.6 and below, if a user loads Espo in the browser with double slashes (e.g https://domain//#Admin) and the webserver does not strip the double slash, it can cause a corrupted Slim router's cache. This will make the instance unusable until there is a completed rebuild. This is fixed in version 9.1.7.

The record
Technical detail
CVSS v3.1
4.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00248 · 15.2th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2025-08-05T00:17Z
EPSS history
Timeline
  • 05 AUG 00:17Z
    EspoCRM is vulnerable to access denial through double slash in URI corrupting router cache
    cvelistv5