Answer in brief
CVE-2018-3739 records a Critical severity (CVSS 9.1) vulnerability in Denial of Service in https-proxy-agent. The current sources do not mark it as known exploited. The current feed maps https-proxy-agent (npm). 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 9.1. 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 https-proxy-agent (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| https-proxy-agentnpm | >=0 <2.2.0 | 2.2.0 |
Published upstream
Jul 27, 2018
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
Versions of `https-proxy-agent` before 2.2.0 are vulnerable to denial of service. This is due to unsanitized options (proxy.auth) being passed to `Buffer()`. ## Recommendation Update to version 2.2.0 or later.
Quoted source text, attributed separately from HOL analysis.