CVE-2025-54123— Hoverfly vulnerable to remote code execution at `/api/v2/hoverfly/middleware` endpoint due to insecure middleware implementation
Quick assessment
Affected
SpectoLabs hoverfly
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Hoverfly是SpectoLabs开源的一种轻量级的开源 API 模拟工具。 Hoverfly 1.11.3及之前版本存在安全漏洞，该漏洞源于命令注入，可能导致远程代码执行。
Public Exploits 1
Nuclei · 1
CVE-2025-54123.yaml [template]
In-the-Wild Activity Observed
github_trending · low
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-54123
Vulnerability Information
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Vulnerability Title
Hoverfly vulnerable to remote code execution at `/api/v2/hoverfly/middleware` endpoint due to insecure middleware implementation
Source: CVE Program / CVE List V5
Vulnerability Description
Hoverfly is an open source API simulation tool. In versions 1.11.3 and prior, the middleware functionality in Hoverfly is vulnerable to command injection vulnerability at `/api/v2/hoverfly/middleware` endpoint due to insufficient validation and sanitization in user input. The vulnerability exists in the middleware management API endpoint `/api/v2/hoverfly/middleware`. This issue is born due to combination of three code level flaws: Insufficient Input Validation in middleware.go line 94-96; Unsafe Command Execution in local_middleware.go line 14-19; and Immediate Execution During Testing in hoverfly_service.go line 173. This allows an attacker to gain remote code execution (RCE) on any system running the vulnerable Hoverfly service. Since the input is directly passed to system commands without proper checks, an attacker can upload a malicious payload or directly execute arbitrary commands (including reverse shells) on the host server with the privileges of the Hoverfly process. Commit 17e60a9bc78826deb4b782dca1c1abd3dbe60d40 in version 1.12.0 disables the set middleware API by default, and subsequent changes to documentation make users aware of the security changes of exposing the set middleware API.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Hoverfly 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hoverfly是SpectoLabs开源的一种轻量级的开源 API 模拟工具。 Hoverfly 1.11.3及之前版本存在安全漏洞，该漏洞源于命令注入，可能导致远程代码执行。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| SpectoLabs | hoverfly | <= 1.11.3 | - |
|
II. Public POCs for CVE-2025-54123
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Hoverfly versions 1.11.3 and below are vulnerable to remote code execution (RCE) via command injection in the middleware API endpoint (/api/v2/hoverfly/middleware). Insufficient validation of the 'binary' and 'script' parameters allows an unauthenticated attacker to execute arbitrary commands on the host system. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-54123.yaml | POC Details |
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III. Intelligence Information for CVE-2025-54123
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Patches & Fixes for CVE-2025-54123 (2)
IV. Related Vulnerabilities
V. Comments for CVE-2025-54123
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