CVE-2025-52892— EspoCRM is vulnerable to access denial through double slash in URI corrupting router cache
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I. Basic Information for CVE-2025-52892
Vulnerability Information
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Vulnerability Title
EspoCRM is vulnerable to access denial through double slash in URI corrupting router cache
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: NVD (National Vulnerability Database)
Vulnerability Title
EspoCRM 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EspoCRM是EspoCRM开源的一套开源的基于Web的客户关系管理系统（CRM）。该系统提供销售自动化、社区和客户支持等功能。 EspoCRM 9.1.6及之前版本存在环境问题漏洞，该漏洞源于双斜杠导致Slim路由器缓存损坏，可能导致实例不可用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-52892
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IV. Related Vulnerabilities
Same product: espocrm
- CVE-2026-33733
EspoCRM has Admin TemplateManager path traversal that allows - CVE-2026-33656
EspoCRM vulnerable to authenticated RCE via Formula with pat - CVE-2026-33740
EspoCRM: Email importEml can import and delete another user' - CVE-2026-33659
EspoCRM: SSRF via DNS Rebinding in Attachment fromImageUrl E - CVE-2026-33657
EspoCRM: Stored HTML injection in email notifications about
Same vendor: espocrm
- CVE-2026-33733
EspoCRM has Admin TemplateManager path traversal that allows - CVE-2026-33656
EspoCRM vulnerable to authenticated RCE via Formula with pat - CVE-2026-33740
EspoCRM: Email importEml can import and delete another user' - CVE-2026-33659
EspoCRM: SSRF via DNS Rebinding in Attachment fromImageUrl E - CVE-2026-33657
EspoCRM: Stored HTML injection in email notifications about
Same weakness: CWE-444
- CVE-2026-40562
Gazelle versions through 0.49 for Perl allows HTTP Request S - CVE-2026-40561
Starlet versions through 0.31 for Perl allows HTTP Request S - CVE-2026-39805
CL.CL HTTP request smuggling via duplicate Content-Length in - CVE-2026-40560
Starman versions before 0.4018 for Perl allows HTTP Request - CVE-2026-41873
Pony Mail: Admin account takeover via request smuggling
V. Comments for CVE-2025-52892
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