---
id: CVE-2025-67485
title: >-
  mad-proxy is a Python-based HTTP/HTTPS proxy server for detection and blocking
  of malicious web activity using custom security policies
summary: >-
  mad-proxy is a Python-based HTTP/HTTPS proxy server for detection and blocking
  of malicious web activity using custom security policies. Versions 0.3 and
  below allow attackers to bypass HTTP/HTTPS traffic interception rules,
  potentially …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-693
vendor: machphy
product: mad-proxy
affected:
  - mad-proxy <= 0.3
published: '2025-12-10'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T21:10:00.183'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-67485'
references:
  - url: >-
      https://github.com/machphy/mad-proxy/security/advisories/GHSA-wx63-35hw-2482
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-67485'
  - url: 'https://github.com/machphy/mad-proxy'
tags:
  - nvd
  - osv
  - pip
epss: 0.00244
epssPercentile: 0.15508
aliases:
  - GHSA-wx63-35hw-2482
  - PYSEC-2026-1596
ecosystem: pip
ingestedAt: '2026-07-08T18:25:53.927Z'
---

## Overview

mad-proxy is a Python-based HTTP/HTTPS proxy server for detection and blocking of malicious web activity using custom security policies. Versions 0.3 and below allow attackers to bypass HTTP/HTTPS traffic interception rules, potentially exposing sensitive traffic. This issue does not have a fix at the time of publication.

## Affected

- `mad-proxy <= 0.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2025-67485)

Affected packages:

- `mad-proxy <= 0.3`

Source: https://osv.dev/vulnerability/GHSA-wx63-35hw-2482