npm package report

Is mustache safe?

1 known vulnerability, worst severity HIGH.

// reach

0 direct dependencies

none carry a known advisory

113 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

6.1

medium

CVSS v3.0 base score out of 10; GitHub rates it HIGH

epss

1.7%

medium

chance of exploitation in 30 days, 77th percentile of all CVEs

xyz score

4.6

medium

CyberXYZ composite out of 10

fig. 01 — GHSA-w3w8-37jv-2c58, the advisory selected below

// 1 advisories

GHSA-w3w8-37jv-2c58

HIGHGitHub ratingCVE-2015-8862

Versions of mustache prior to 2.2.1 are affected by a cross-site scripting vulnerability when attributes in mustache templates are not quoted.

// example

Template:

Input:

Rendered result:

## Recommendation

Update to version 2.2.1 or later.
Alternatively, ensure that all attributes in hmustache templates are encapsulated with quotes.

// cvss v3.0 vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

Checked 2026-11-06 at 22:03 UTC. The most recent advisory here was published 2017-10-24. Updated continuously from NVD, GHSA, OSV and CNA feeds.