Is mitmproxy affected by CVE-2026-40606?

PyPI mitmproxy is affected in <12.2.2.

Is CVE-2026-40606 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

medium

CVE-2026-40606

Q: Is CVE-2026-40606 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

PyPI · mitmproxy

Summary

mitmproxy is a interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers and mitmweb is a web-based interface for mitmproxy. In mitmproxy 12.2.1 and below, the builtin LDAP proxy authentication does not correctly sanitize the username when querying the LDAP serv

Severity: medium
EPSS: 0.2% (p6)
Also known as: GHSA-527g-3w9m-29hv, PYSEC-2026-92
Published: 2026-04-21

References

https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-527g-3w9m-29hv

Related advisories

CVE-2025-23217 — high · PyPI/mitmproxy
GHSA-63cx-g855-hvv4 — medium · PyPI/mitmproxy

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.