---
title: "CVE-2025-23217\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2025-23217?format=md
keywords: index, follow
---

# CVE-2025-23217

Publication date 6 February 2025

Last updated 10 July 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## 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 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| mitmproxy | 26.04 LTS resolute | Needs evaluation |
| 25.10 questing | Ignored end of life, was needs-triage |
| 25.04 plucky | Ignored end of life, was needs-triage |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v4.0

**Base score**

8.2 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Attack requirements | Present |
  | Privileges required | None |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | High |
  | Vulnerable system - Integrity impact | None |
  | Vulnerable system - Availability impact | None |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.2 · High |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-23217)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-23217)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-23217)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2025-23217)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2025-23217>
* <https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-wg33-5h85-7q5p>
* <https://en.wikipedia.org/wiki/Server-side_request_forgery>
* <https://github.com/mitmproxy/mitmproxy/blob/main/CHANGELOG.md#06-february-2025-mitmproxy-1112>