CVE-2025-23217: PYSEC-2026-1630 - Mitmweb API Authentication Bypass Using Proxy Server

CVE-2025-23217 · Severity: medium · CVSS 4 · Published 2026-07-07

Mitmweb API Authentication Bypass Using Proxy Server

Technologies: mitmproxy (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-23217 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-23217 being exploited in the wild.
How severe is CVE-2025-23217?
Medium severity, with a CVSS score of 4, published 7 July 2026.
Which products and versions are affected?
mitmproxy (PyPI) ECOSYSTEM:introduced=0,fixed=11.1.2.
Is there a fix for CVE-2025-23217?
Yes. mitmproxy (PyPI): upgrade to 11.1.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-23217?
Check whether you run mitmproxy (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • mitmproxy (PyPI): upgrade to 11.1.2 or later
    pip install "mitmproxy>=11.1.2"

Affected products

  • mitmproxy (PyPI) ECOSYSTEM:introduced=0,fixed=11.1.2

Identifiers

  • CVE-2025-23217
  • GHSA-wg33-5h85-7q5p
  • PYSEC-2026-1630

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