npm package report

Is js-extend safe?

1 known vulnerability, worst severity CRITICAL.

// reach

0 direct dependencies

none carry a known advisory

    1 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
    0.0
    critical

    severity band, no base score published

    epss
    0.00%
    medium

    chance of exploitation in 30 days, 87th percentile of all CVEs

    xyz score
    0.0
    medium

    CyberXYZ composite out of 10

    fig. 01 — GHSA-mh82-55cm-6gfh, the advisory selected below

    // 1 advisories

    GHSA-mh82-55cm-6gfh

    CRITICALCVE-2021-25945

    Prototype pollution vulnerability in 'js-extend' versions 0.0.1 through 1.0.1 allows attacker to cause a denial of service and may lead to remote code execution.

    // cvss v3.1 vector

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

    Attack vector
    Network
    Attack complexity
    Low
    Privileges required
    None
    User interaction
    None
    Scope
    Unchanged
    Confidentiality
    High
    Integrity
    High
    Availability
    High

    Checked 2026-10-04 at 01:10 UTC. The most recent advisory here was published 2021-06-08. Updated continuously from NVD, GHSA, OSV and CNA feeds.

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