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CVE-2026-55629— Whistle: Path traversal

Quick assessment

Affected
avwo whistle
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.

avenwu whistle是avenwu个人开发者开源的一个基于 Node 实现的跨平台抓包调试工具。 avenwu whistle 2.10.3之前版本存在路径遍历漏洞，该漏洞源于lib/service/service.js处理GET /cgi-bin/temp/get时未正确验证用户提供的文件名，可能导致远程攻击者读取任意文件。

AI Predicted 7.5 Difficulty: Easy EPSS 0.67% · P50

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
avwo whistle < 2.10.3 affected
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I. Basic Information for CVE-2026-55629

Vulnerability Information
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Vulnerability Title
Whistle: Path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
Whistle is an HTTP, HTTP2, HTTPS, and WebSocket debugging proxy. Prior to 2.10.3, lib/service/service.js handles GET /cgi-bin/temp/get by reading req.query.filename, joining it to TEMP_FILES_PATH only when it matches the temporary file pattern, and otherwise passing the user-supplied filename directly to getFile, allowing a remote attacker to read arbitrary files such as /etc/passwd. This issue is reported as fixed in version 2.10.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
avenwu whistle 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
avenwu whistle是avenwu个人开发者开源的一个基于 Node 实现的跨平台抓包调试工具。 avenwu whistle 2.10.3之前版本存在路径遍历漏洞，该漏洞源于lib/service/service.js处理GET /cgi-bin/temp/get时未正确验证用户提供的文件名，可能导致远程攻击者读取任意文件。
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
avwo whistle < 2.10.3 -

II. Public POCs for CVE-2026-55629

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III. Intelligence Information for CVE-2026-55629

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Patches & Fixes for CVE-2026-55629 (1)

Vendor Advisories for CVE-2026-55629 (1)

IV. Related Vulnerabilities

Same product: whistle
Same weakness: CWE-22

V. Comments for CVE-2026-55629

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