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CVE-2019-1010266 — Vulnerability in lodash — CVE Details

MEDIUM

Regular Expression Denial of Service (ReDoS) in lodash

Published July 19, 2019Updated September 10, 2026Source: osv

Summary

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.

Advisory Timeline

  • First published July 19, 2019 (2642 days ago).
  • Last revised September 10, 2026 — 2609 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm
Update lodash to 4.17.11 or later
npm install lodash@4.17.11
npm
Update lodash-es to 4.17.11 or later
npm install lodash-es@4.17.11
Bundler
Update lodash-rails to 4.17.11 or later
gem install lodash-rails -v 4.17.11
npm
Update lodash-amd to 4.17.11 or later
npm install lodash-amd@4.17.11

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (4)

Affects 2 ecosystems: npm (3), rubygems (1).

PackageEcosystemAffectedFixed In
lodash
npm
All versions4.17.11
lodash-es
npm
All versions4.17.11
lodash-rails
rubygems
4.11.2, 4.12.0, 4.13.1, 4.14.1 (+9 more)4.17.11
lodash-amd
npm
All versions4.17.11

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-400
    Uncontrolled Resource ConsumptionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 6.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

References

Frequently Asked Questions

What is CVE-2019-1010266?
Regular Expression Denial of Service (ReDoS) in lodash This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 6.5/10).
How do I check if my project is affected by CVE-2019-1010266?
CVE-2019-1010266 affects lodash, lodash-es and lodash-rails (and 1 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-1010266 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
6.5

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-x5rq-j2xg-h7qm
SNYK-JS-LODASH-73639

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