CVE-2026-40606 Details
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 server. This allows a malicious client to bypass authentication. Only mitmproxy instances using the proxyauth option with LDAP are affected. This option is not enabled by default. The vulnerability has been fixed in mitmproxy 12.2.2 and above.
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Exploit prediction scoring system (EPSS) score for CVE-2026-40606
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.04 Probability of exploitation activity being observed over the next 30 days (13th percentile)
CVSS score for CVE-2026-40606
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
4.8 Medium
Products affected by CVE-2026-40606
Mitmproxy 10.0.0
Mitmproxy 10.1.1
Mitmproxy 10.1.5
Mitmproxy 10.2.2
Mitmproxy 10.2.4
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-40606 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 5 31.25%
CN 3 18.75%
CA 1 6.25%
DE 1 6.25%
FR 1 6.25%
IE 1 6.25%
JP 1 6.25%
KR 1 6.25%
RU 1 6.25%
VN 1 6.25%

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CVE-2026-40606 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 12 92.31%
Telecommunications 1 7.69%

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