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CVE-2025-4295— Host Header Injection in HotelRunner's B2B

Quick assessment

Affected
HotelRunner B2B
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HotelRunner B2B是土耳其HotelRunner公司的一个为酒店行业提供业务管理与合作的软件工具。 HotelRunner B2B 04.06.2025之前版本存在安全漏洞，该漏洞源于证书主机不匹配验证不当，可能导致HTTP响应拆分。

CVSS 4.6 · Medium EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
HotelRunner B2B < 04.06.2025 affected
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I. Basic Information for CVE-2025-4295

Vulnerability Information
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Vulnerability Title
Host Header Injection in HotelRunner's B2B
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Validation of Certificate with Host Mismatch vulnerability in HotelRunner B2B allows HTTP Response Splitting. This issue affects B2B: before 04.06.2025.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对宿主不匹配的证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
HotelRunner B2B 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HotelRunner B2B是土耳其HotelRunner公司的一个为酒店行业提供业务管理与合作的软件工具。 HotelRunner B2B 04.06.2025之前版本存在安全漏洞，该漏洞源于证书主机不匹配验证不当，可能导致HTTP响应拆分。
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

Vendor Product Affected Versions CPE Subscribe
HotelRunner B2B 0 ~ 04.06.2025 -

II. Public POCs for CVE-2025-4295

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III. Intelligence Information for CVE-2025-4295

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Vendor Advisories for CVE-2025-4295 (1)

IV. Related Vulnerabilities

Same product: B2B
Same vendor: HotelRunner
Same weakness: CWE-297

V. Comments for CVE-2025-4295

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