CVE catalog
CVE-2026-40606
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 bu
- Severity
- Medium · CVSS 4.8
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.17% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | mitmproxy | sid | 8.1.1-4 | vulnerable |
| Debian | mitmproxy | forky | 8.1.1-4 | vulnerable |
| Debian | mitmproxy | bookworm | 8.1.1-2 | vulnerable |
| Cpe | mitmproxy | Not reported | Not reported | vulnerable |
| Cpe | mitmproxy | Not reported | 12.2.2 | fixed |
| PyPI | mitmproxy | Not reported | 12.2.2 | fixed |
| Opensuse | python-mitmproxy | tumbleweed | 12.2.2-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | mitmproxy | source | sid | (unfixed) | not yet assigned | Not reported | [1134620] |
| Debian | mitmproxy | source | forky | (unfixed) | not yet assigned | Not reported | [1134620] |
| Debian | mitmproxy | source | bookworm | (unfixed) | not yet assigned | Not reported | [1134620] |
| Cpe | mitmproxy | cpe | Not reported | 12.2.2 | Not reported | Not reported | Not reported |
| PyPI | mitmproxy | PyPI | Not reported | 12.2.2 | Not reported | Not reported | Not reported |
| Opensuse | python-mitmproxy | rpm | tumbleweed | 12.2.2-1.1 | Not reported | OPENSUSE-SU-2026:10622-1 | Not reported |
Notes
[bookworm] mitmproxy: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [mitmproxy]Affected
Details (2)
8.1.1-2· all · bookwormAffected
nvd · mitmproxy · debian · bookworm; nvd · mitmproxy · debian · 12
8.1.1-2· all · bookwormAffected
nvd · mitmproxy · debian · bookworm; nvd · mitmproxy · debian · 12
[openSUSE Tumbleweed]
- [python313-mitmproxy]Unknown
Source package: [python-mitmproxy]
Details (1)
12.2.3-1.2· noarch · tumbleweedUnknown · Fixed:
12.2.2-1.1Version impact unknown
nvd · python-mitmproxy · opensuse · tumbleweed
- [python314-mitmproxy]Unknown
Source package: [python-mitmproxy]
Details (1)
12.2.3-1.2· noarch · tumbleweedUnknown · Fixed:
12.2.2-1.1Version impact unknown
nvd · python-mitmproxy · opensuse · tumbleweed
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10622-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-40606]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-40606]
- [https://osv.dev/vulnerability/GHSA-527g-3w9m-29hv]
- [https://osv.dev/vulnerability/PYSEC-2026-92]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10622-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-40606]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]