https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-02T20:04:32.440486+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2026-40606 CVE-2026-40606 — ProxyAuth Addon LDAP Injection in mitmproxy 2026-10-02T20:04:32.442356+00:00

Affected: mitmproxy

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.

 https://cve.radiocsirt.org/vuln/ghsa-527g-3w9m-29hv GHSA-527g-3w9m-29hv — mitmproxy has an LDAP Injection 2026-10-02T20:04:32.442408+00:00

Affected: PyPI: mitmproxy

### Impact 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.

### Patches

The vulnerability has been fixed in mitmproxy 12.2.2 and above.

### Acknowledgements

We thank Yue (Knox) Liu (@yueyueL) for responsibly disclosing this vulnerability to the mitmproxy team.

### Timeline

- **2025-12-08**: Received initial report. - **2025-12-09**: Verified report and confirmed receipt. - **2026-01-02**: Informed researcher that patch will be part of the next regular patch release. - **2026-04-12**: Published patch release and advisory.