SEPTEMBER 8, 2026
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Case File

CVE-2026-55629

HIGH · CVSS 8.7 EPSS 0.46% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-16 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

The vulnerability in Whistle allows remote attackers to exploit the GET /cgi-bin/temp/get endpoint, enabling them to read arbitrary files on the server, including sensitive files like /etc/passwd. This issue arises from improper validation of user-supplied filenames, which can lead to unauthorized file access. Organizations using versions prior to 2.10.3 should prioritize upgrading to mitigate the risk of sensitive data exposure.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55629
Severity
HIGH
CVSS
8.7
EPSS
0.46%

Original NVD 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.