GHSA-r773-pmw3-f4mr

    Dashboard / Vulnerabilities / GHSA-r773-pmw3-f4mr

    GHSA-r773-pmw3-f4mr

    Published: 10 Feb 2022Last Modified: 13 Mar 2026

    Summary: Open Redirect in koa-remove-trailing-slashes

    Details: The package koa-remove-trailing-slashes before 2.0.2 are vulnerable to Open Redirect via the use of trailing double slashes in the URL when accessing the vulnerable endpoint (such as `https://example.com//attacker.example/`). The vulnerable code is in `index.js::removeTrailingSlashes()`, as the web server uses relative URLs instead of absolute URLs.

    References: https://nvd.nist.gov/vuln/detail/CVE-2021-23384, https://github.com/vgno/koa-remove-trailing-slashes/commit/e7ce4000e9fe4d957332df1056640a22ebea28ee, https://github.com/vgno/koa-remove-trailing-slashes, https://github.com/vgno/koa-remove-trailing-slashes/blame/6a01ba8fd019bd3ece44879c553037ad96ba7d47/index.js#L31, https://snyk.io/vuln/SNYK-JS-KOAREMOVETRAILINGSLASHES-1085708

    Affected packages

    Package

    Name: koa-remove-trailing-slashes

    Purl: pkg:npm/koa-remove-trailing-slashes

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -2.0.2

    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-r773-pmw3-f4mr | CVE-DB