npm package report

Is messageformat safe?

1 known vulnerability, worst severity LOW.

cvss
7.5

how bad it is if exploited, out of 10

epss
0.40%

chance of exploitation in the next 30 days

xyz score
1.8

CyberXYZ composite, out of 10

fig. 01 — GHSA-xfqm-j7pc-xrfc, the advisory selected below

// advisories

GHSA-xfqm-j7pc-xrfc

LOWCVE-2025-57349

The messageformat package, an implementation of the Unicode MessageFormat 2 specification for JavaScript, is vulnerable to prototype pollution due to improper handling of message key paths in versions prior to 2.3.0. The flaw arises when processing nested message keys containing special characters (e.g., proto ), which can lead to unintended modification of the JavaScript Object prototype. This vu

Affected
< 2.3.0
Fixed in
3.0.0-beta.0
Weakness
CWE-1321
Published
2025-09-24
Source
github

GHSANVDMITREreference

// dependencies

0 direct

Sign in for dependency paths and remediation

// ai model usage

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

Checked 2026-09-22 at 01:38 UTC. The most recent advisory here was published 2025-09-24. Updated continuously from NVD, GHSA, OSV and CNA feeds.

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Is messageformat safe? npm package security report | CyberXYZ