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Regular Expression Denial of Service (ReDoS) in lodash

Moderate severity GitHub Reviewed Published Jul 19, 2019 to the GitHub Advisory Database • Updated Sep 29, 2025

Package

npm lodash (npm)

Affected versions

>= 4.7.0, < 4.17.11

Patched versions

4.17.11
npm lodash-amd (npm)
>= 4.7.0, < 4.17.11
4.17.11
npm lodash-es (npm)
>= 4.7.0, < 4.17.11
4.17.11
bundler lodash-rails (RubyGems)
>= 4.7.0, < 4.17.11
4.17.11

Description

lodash prior to 4.7.11 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: 4.7.11.

References

Reviewed Jul 19, 2019
Published to the GitHub Advisory Database Jul 19, 2019
Last updated Sep 29, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

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

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(69th percentile)

Weaknesses

Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Learn more on MITRE.

CVE ID

CVE-2019-1010266

GHSA ID

GHSA-x5rq-j2xg-h7qm

Source code

Credits

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