npm package report

Is underscore safe?

2 known vulnerabilities, worst severity CRITICAL.

// reach

0 direct dependencies

none carry a known advisory

332 packages depend on it

an advisory here reaches each of them

Create a free accountfor every dependency path, dependent and what to upgrade

// ai model usage

Tracked for PyPI packages. HuggingFace models declare Python dependencies, so npm packages are not covered.

cvss

9.8

critical

CVSS v3.1 base score out of 10

epss

4.2%

medium

chance of exploitation in 30 days, 91st percentile of all CVEs

xyz score

5.6

medium

CyberXYZ composite out of 10

fig. 01 — GHSA-cf4h-3jhx-xvhq, the advisory selected below

// 2 advisories

GHSA-cf4h-3jhx-xvhq

CRITICALGitHub ratingCVE-2021-23358

The package underscore from 1.13.0-0 and before 1.13.0-2, from 1.3.2 and before 1.12.1 are vulnerable to Arbitrary Code Execution via the template function, particularly when a variable property is passed as an argument as it is not sanitized.

// cvss v3.1 vector

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

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

Checked 2026-11-06 at 20:23 UTC. The most recent advisory here was published 2026-03-03. Updated continuously from NVD, GHSA, OSV and CNA feeds.