npm package report

Is y18n safe?

y18n (npm) has 1 known vulnerability, the worst rated HIGH. Upgrade to 5.0.5 or later to clear it. No malicious-package signal is recorded.

// reach

0 direct dependencies

none carry a known advisory

    23 packages depend on it

    an advisory here reaches each of them

    Create a free accountfor every dependency path, dependent and what to upgrade
    // ai model usage

    Tracked for PyPI packages. HuggingFace models declare Python dependencies, so npm packages are not covered.


    cvss
    7.3
    high

    CVSS v3.1 base score out of 10

    epss
    69.6%
    critical

    chance of exploitation in 30 days, 99th percentile of all CVEs

    xyz score
    6.7
    medium

    CyberXYZ composite out of 10

    fig. 01 — GHSA-c4w7-xm78-47vh, the advisory selected below

    // 1 advisories

    The npm package y18n before versions 3.2.2, 4.0.1, and 5.0.5 is vulnerable to Prototype Pollution.

    Full advisory text at GitHub advisory or NVD.

    // cvss v3.1 vector

    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

    Attack vector
    Network
    Attack complexity
    Low
    Privileges required
    None
    User interaction
    None
    Scope
    Unchanged
    Confidentiality
    Low
    Integrity
    Low
    Availability
    Low
    // questions
    Is y18n safe to install?

    CyberXYZ does not call a package safe in absolute terms. It records 1 known vulnerability for y18n (npm), the worst rated HIGH, and no malicious-package signal. Whether it is acceptable depends on the version you run.

    Does y18n have known vulnerabilities?

    Yes. CyberXYZ records 1 known vulnerability for y18n (npm), the worst rated HIGH. They are GHSA-c4w7-xm78-47vh.

    Which version of y18n should I use?

    5.0.5 or later clears every advisory recorded for y18n (npm). Check the release you pick before installing it.

    How do I check y18n before installing?

    Search y18n in CyberXYZ Check at https://cyberxyz.io/check?q=y18n. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.


    Checked 2026-11-14 at 10:59 UTC. The most recent advisory here was published 2021-03-29. Updated continuously from NVD, GHSA, OSV and CNA feeds.

    Think a verdict here is wrong? Tell us — we respond within 2 business days.