Description
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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-527g-3w9m-29hv
Scores
CVSS v3
4.8
EPSS
0.0017
EPSS Percentile
6.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-90
Status
published
Products (2)
mitmproxy/mitmproxy
< 12.2.2 (2 CPE variants)
pypi/mitmproxy
0 - 12.2.2PyPI
Published
Apr 21, 2026
Tracked Since
Apr 21, 2026