• Bug#1103701: mitmproxy: CVE-2025-23217

    From =?UTF-8?Q?Moritz_M=C3=BChlenhoff?=@21:1/5 to All on Sun Apr 20 21:00:01 2025
    Source: mitmproxy
    X-Debbugs-CC: [email protected]
    Severity: grave
    Tags: security

    Hi,

    The following vulnerability was published for mitmproxy.

    CVE-2025-23217[0]:
    | 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 mitmweb 11.1.1 and below, a
    | malicious client can use mitmweb's proxy server (bound to `*:8080`
    | by default) to access mitmweb's internal API (bound to
    | `127.0.0.1:8081` by default). In other words, while the cannot
    | access the API directly, they can access the API through the proxy.
    | An attacker may be able to escalate this SSRF-style access to remote
    | code execution. The mitmproxy and mitmdump tools are unaffected.
    | Only mitmweb is affected. This vulnerability has been fixed in
    | mitmproxy 11.1.2 and above. Users are advised to upgrade. There are
    | no known workarounds for this vulnerability.

    https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-wg33-5h85-7q5p


    If you fix the vulnerability please also make sure to include the
    CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

    For further information see:

    [0] https://security-tracker.debian.org/tracker/CVE-2025-23217
    https://www.cve.org/CVERecord?id=CVE-2025-23217

    Please adjust the affected versions in the BTS as needed.

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