Answer in brief
CVE-2019-1010266 records a Medium severity (CVSS 6.5) vulnerability in Regular Expression Denial of Service (ReDoS) in lodash. The current sources do not mark it as known exploited. The current feed maps lodash (npm), lodash-amd (npm), lodash-es (npm), lodash-rails (rubygems). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps lodash (npm), lodash-amd (npm), lodash-es (npm), lodash-rails (rubygems). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| lodashnpm | >=4.7.0 <4.17.11 | 4.17.11 |
| lodash-amdnpm | >=4.7.0 <4.17.11 | 4.17.11 |
| lodash-esnpm | >=4.7.0 <4.17.11 | 4.17.11 |
| lodash-railsrubygems | >=4.7.0 <4.17.11 | 4.17.11 |
Published upstream
Jul 19, 2019
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
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.
Quoted source text, attributed separately from HOL analysis.