Detections
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SCA: security update for mitmproxy (GHSA-527g-3w9m-29hv)

medium Tenable Self-Hosted Container Security Plugin ID 440332

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-40606)

Solution

Update the mitmproxy library and its related packages to version 12.2.2 or later.

See Also

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

Plugin Details

Severity: Medium

ID: 440332

Version: Revision 1.11

Type: Local

Family: SCA Checks

Published: 4/14/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.71

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-40606

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/14/2026

Vulnerability Publication Date: 4/14/2026

Reference Information

CVE: CVE-2026-40606

cwe: CWE-90