GHSA-cfph-4qqh-w828

    Dashboard / Vulnerabilities / GHSA-cfph-4qqh-w828

    GHSA-cfph-4qqh-w828

    Published: 3 Jan 2024Last Modified: 8 Jul 2026
    Aliases:

    Summary: Arbitrary remote file read in Wrangler dev server

    Details: ### Impact Sending specially crafted HTTP requests and inspector messages to Wrangler's dev server could result in any file on the user's computer being accessible over the local network. An attacker that could trick any user on the local network into opening a malicious website could also read any file. ### Patches This issue was fixed in `[email protected]`. Wrangler will now only serve files that are part of your bundle, or referenced by your bundle's source maps. ### Workarounds Configure Wrangler to listen on local interfaces instead with `wrangler dev --ip 127.0.0.1`. This is the [default as of `[email protected]`](https://github.com/cloudflare/workers-sdk/security/advisories/GHSA-f8mp-x433-5wpf), and removes the local network as an attack vector, but does not prevent an attack from visiting a malicious website. ### References - https://github.com/cloudflare/workers-sdk/pull/4532 - https://github.com/cloudflare/workers-sdk/pull/4535

    Affected packages

    Package

    Name: wrangler

    Purl: pkg:npm/wrangler

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 3.9.0
    Fixed -3.19.0

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-cfph-4qqh-w828 | CVE-DB