mitmproxy CVE-2026-40606

MEDIUM
LDAP Injection (CWE-90)
2026-04-21 [email protected]
Authentication Bypass Ldap Code Injection
4.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

1
Analysis Generated
Apr 21, 2026 - 18:49 vuln.today

DescriptionNVD

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.

AnalysisAI

Authentication bypass in mitmproxy 12.2.1 and below allows remote attackers to bypass LDAP-based proxy authentication through unsanitized username injection. The vulnerability affects only instances explicitly configured with the proxyauth option using LDAP authentication, which is disabled by default. …

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CVE-2026-40606 vulnerability details – vuln.today
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