---
title: "CVE-2023-7080: Arbitrary remote code execution within `wrangler dev` Workers sandbox"
url: https://erroneo.us/security/cve/CVE-2023-7080/
description: "CVE-2023-7080 (wrangler (npm)): The V8 inspector intentionally allows arbitrary code execution within the Workers sandbox for debugging. wrangler dev would…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-12-29
date_modified: 2024-08-02
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-7080"
kev: false
cvss: 8.5
epss: 0.0063
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-7080: Arbitrary remote code execution within `wrangler dev` Workers sandbox

**Signal:** Normal patch cycle. No exploitation signal; fix it in your next routine update if you are affected. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.6% , percentile 49: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 49% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs a user to click or open something. Phishing makes that realistic, but it is not wormable.
- Only applies if your dependency tree includes wrangler (npm) >= 3.0.0, < 3.19.0, fixed in 3.19.0 ; wrangler (npm) >= 2.0.0, < 2.20.2, fixed in 2.20.2 . Check your lockfile, including transitive dependencies.

## What it is

The V8 inspector intentionally allows arbitrary code execution within the Workers sandbox for debugging. wrangler dev would previously start an inspector server listening on all network interfaces. This would allow an attacker on the local network to connect to the inspector and run arbitrary code. Additionally, the inspector server did not validate Origin/Host headers, granting an attacker that can trick any user on the local network into opening a malicious website the ability to run code. If wrangler dev --remote was being used, an attacker could access production resources if they were bound to the worker. This issue was fixed in wrangler@3.19.0 and wrangler@2.20.2. Whilst wrangler dev's inspector server listens on local interfaces by default as of wrangler@3.16.0, an SSRF vulnerability in miniflare https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-fwvg-2739-22v7 (CVE-2023-7078) allowed access from the local network until wrangler@3.18.0. wrangler@3.19.0 and wrangler@2.20.2 introduced validation for the Origin/Host headers.

## Affected packages

- npm `wrangler` >= 3.0.0, < 3.19.0 → fixed: 3.19.0
- npm `wrangler` >= 2.0.0, < 2.20.2 → fixed: 2.20.2

## Affected products (CVE record)

- Cloudflare wrangler: <= 3.0.0, < 3.19.0, <= 2.0.0, < 2.20.2

## Severity

- cloudflare CVSS 3.1: 8.5 `CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N`
- GitHub CVSS 3.1: 9.3 `CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- FIRST EPSS (model of 2026-10-21): 0.63% probability of exploitation activity in the next 30 days; percentile 49.

## Sources

- [GitHub Advisory GHSA-f8mp-x433-5wpf](https://github.com/advisories/GHSA-f8mp-x433-5wpf)
- [CVE.org record CVE-2023-7080](https://www.cve.org/CVERecord?id=CVE-2023-7080)
- [NVD entry CVE-2023-7080](https://nvd.nist.gov/vuln/detail/CVE-2023-7080)
- [github.com](https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-f8mp-x433-5wpf)
- [github.com](https://github.com/cloudflare/workers-sdk/issues/4430)
- [github.com](https://github.com/cloudflare/workers-sdk/pull/4437)
- [github.com](https://github.com/cloudflare/workers-sdk/pull/4535)
- [github.com](https://github.com/cloudflare/workers-sdk/pull/4550)
- [github.com](https://github.com/cloudflare/workers-sdk/commit/05b1bbd2f5b8e60268e30c276067c3a3ae1239cf)
- [github.com](https://github.com/cloudflare/workers-sdk/commit/29df8e17545bf3926b6d61678b596be809d40c6d)
- [github.com](https://github.com/cloudflare/workers-sdk/commit/49a469601adaa9eb9e1f2d6de197c1979d5c6c1b)
- [github.com](https://github.com/cloudflare/workers-sdk/commit/63708a94fb7a055bf15fa963f2d598b47b11d3c0)

---
Source page: https://erroneo.us/security/cve/CVE-2023-7080/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt