CVE-2021-23387

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    CVE-2021-23387

    Published: 24 May 2021Last Modified: 9 Jul 2026

    Summary:

    Details: The package trailing-slash before 2.0.1 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::createTrailing(), as the web server uses relative URLs instead of absolute URLs.

    References: https://github.com/fardog/trailing-slash/blob/f640ece055fe85275c983de5eb94661b95e35670/index.js%23L36, https://github.com/fardog/trailing-slash/commit/f8e66f1429308247e5a119d430203077d8f05048, https://snyk.io/vuln/SNYK-JS-TRAILINGSLASH-1085707

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -964b0c226b388ce0974d964e6da054db1766e88d

    Affected versions

    v2.0.0

    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
    CVE-2021-23387 | CVE-DB