CVE-2026-40606CWE-90

ProxyAuth Addon LDAP Injection in mitmproxy

Medium · published April 21, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
16.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00257 · 16.5th percentile
Weakness
CWE-90 · Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Published
2026-04-21T17:43Z
EPSS history
Timeline
  • 21 APR 17:43Z
    ProxyAuth Addon LDAP Injection in mitmproxy
    cvelistv5