Lodash
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By the Year
In 2026 there have been 1 vulnerability in Lodash. Lodash did not have any published security vulnerabilities last year. That is, 1 more vulnerability have already been reported in 2026 as compared to last year.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 1 | 0.00 |
| 2025 | 0 | 0.00 |
| 2024 | 0 | 0.00 |
| 2023 | 0 | 0.00 |
| 2022 | 0 | 0.00 |
| 2021 | 2 | 6.25 |
| 2020 | 1 | 0.00 |
| 2019 | 3 | 7.07 |
| 2018 | 1 | 6.50 |
It may take a day or so for new Lodash vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Lodash Security Vulnerabilities
Prototype Pollution via _.unset/.omit in Lodash 4.17.22
CVE-2025-13465
- January 21, 2026
Lodash versions 4.0.0 through 4.17.22 are vulnerable to prototype pollution in the _.unset and _.omit functions. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes. The issue permits deletion of properties but does not allow overwriting their original behavior. This issue is patched on 4.17.23
Prototype Pollution
Lodash versions prior to 4.17.21 are vulnerable to Command Injection
CVE-2021-23337
7.2 - High
- February 15, 2021
Lodash versions prior to 4.17.21 are vulnerable to Command Injection via the template function.
Code Injection
Lodash versions prior to 4.17.21 are vulnerable to Regular Expression Denial of Service (ReDoS)
CVE-2020-28500
5.3 - Medium
- February 15, 2021
Lodash versions prior to 4.17.21 are vulnerable to Regular Expression Denial of Service (ReDoS) via the toNumber, trim and trimEnd functions.
Prototype pollution attack when using _.zipObjectDeep in lodash before 4.17.20.
CVE-2020-8203
- July 15, 2020
Prototype pollution attack when using _.zipObjectDeep in lodash before 4.17.20.
Allocation of Resources Without Limits or Throttling
Versions of lodash lower than 4.17.12 are vulnerable to Prototype Pollution
CVE-2019-10744
9.1 - Critical
- July 26, 2019
Versions of lodash lower than 4.17.12 are vulnerable to Prototype Pollution. The function defaultsDeep could be tricked into adding or modifying properties of Object.prototype using a constructor payload.
Prototype Pollution
lodash prior to 4.17.11 is affected by: CWE-400: Uncontrolled Resource Consumption
CVE-2019-1010266
6.5 - Medium
- July 17, 2019
lodash prior to 4.17.11 is affected by: CWE-400: Uncontrolled Resource Consumption. The impact is: Denial of service. The component is: Date handler. The attack vector is: Attacker provides very long strings, which the library attempts to match using a regular expression. The fixed version is: 4.17.11.
Resource Exhaustion
A prototype pollution vulnerability was found in lodash <4.17.11 where the functions merge, mergeWith, and defaultsDeep
CVE-2018-16487
5.6 - Medium
- February 01, 2019
A prototype pollution vulnerability was found in lodash <4.17.11 where the functions merge, mergeWith, and defaultsDeep can be tricked into adding or modifying properties of Object.prototype.
lodash node module before 4.17.5 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via defaultsDeep, merge, and mergeWith functions, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property
CVE-2018-3721
6.5 - Medium
- June 07, 2018
lodash node module before 4.17.5 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability via defaultsDeep, merge, and mergeWith functions, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property that will exist on all objects.
Prototype Pollution
