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lodash@4.17.20

Lodash modular utilities.

  • latest version

    4.18.1

  • latest non vulnerable version

    4.18.1

  • first published

    14 years ago

  • latest version published

    1 months ago

  • licenses detected

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    Direct Vulnerabilities

    Known vulnerabilities in the lodash package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • H
    Arbitrary Code Injection

    lodash is a modern JavaScript utility library delivering modularity, performance, & extras.

    Affected versions of this package are vulnerable to Arbitrary Code Injection due the improper validation of options.imports key names in _.template. An attacker can execute arbitrary code at template compilation time by injecting malicious expressions. If Object.prototype has been polluted, inherited properties may also be copied into the imports object and executed.

    Notes:

    1. Version 4.18.0 was intended to fix this vulnerability but it got deprecated due to introducing a breaking functionality issue.

    2. This issue is due to the incomplete fix for CVE-2021-23337.

    How to fix Arbitrary Code Injection?

    Upgrade lodash to version 4.18.1 or higher.

    <4.18.1
    • M
    Prototype Pollution

    lodash is a modern JavaScript utility library delivering modularity, performance, & extras.

    Affected versions of this package are vulnerable to Prototype Pollution via the _.unset and _.omit functions. An attacker can delete properties from built-in prototypes by supplying array-wrapped path segments, potentially impacting application behaviour.

    Notes:

    1. Version 4.18.0 was intended to fix this vulnerability but it got deprecated due to introducing a breaking functionality issue.

    2. This issue is due to incomplete fix for CVE-2025-13465 which protects only against string key members.

    How to fix Prototype Pollution?

    Upgrade lodash to version 4.18.1 or higher.

    >=4.0.0 <4.18.1
    • M
    Prototype Pollution

    lodash is a modern JavaScript utility library delivering modularity, performance, & extras.

    Affected versions of this package are vulnerable to Prototype Pollution via the _.unset and _.omit functions. An attacker can delete methods held in properties of global prototypes but cannot overwrite those properties.

    How to fix Prototype Pollution?

    Upgrade lodash to version 4.17.23 or higher.

    >=4.0.0 <4.17.23
    • H
    Code Injection

    lodash is a modern JavaScript utility library delivering modularity, performance, & extras.

    Affected versions of this package are vulnerable to Code Injection due the improper validation of options.variable key names in _.template. An attacker can execute arbitrary code at template compilation time by injecting malicious expressions. If Object.prototype has been polluted, inherited properties may also be copied into the imports object and executed.

    How to fix Code Injection?

    Upgrade lodash to version 4.17.21 or higher.

    <4.17.21
    • M
    Regular Expression Denial of Service (ReDoS)

    lodash is a modern JavaScript utility library delivering modularity, performance, & extras.

    Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the toNumber, trim and trimEnd functions.

    POC

    var lo = require('lodash');

function build_blank (n) {
var ret = "1"
for (var i = 0; i < n; i++) {
ret += " "
}

return ret + "1";
}

var s = build_blank(50000)
var time0 = Date.now();
lo.trim(s)
var time_cost0 = Date.now() - time0;
console.log("time_cost0: " + time_cost0)

var time1 = Date.now();
lo.toNumber(s)
var time_cost1 = Date.now() - time1;
console.log("time_cost1: " + time_cost1)

var time2 = Date.now();
lo.trimEnd(s)
var time_cost2 = Date.now() - time2;
console.log("time_cost2: " + time_cost2)

    How to fix Regular Expression Denial of Service (ReDoS)?

    Upgrade lodash to version 4.17.21 or higher.

    <4.17.21
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