npm package report

Is i18next-fs-backend safe?

2 known vulnerabilities, worst severity CRITICAL.

cvss

9.1

how bad it is if exploited, out of 10

epss

0.50%

chance of exploitation in the next 30 days

xyz score

4.7

CyberXYZ composite, out of 10

fig. 01 — GHSA-2933-q333-qg83, the advisory selected below

// advisories

GHSA-2933-q333-qg83

CRITICALCVE-2026-48713

i18next-fs-backend ≤ 2.6.5, when used to persist missing translation keys (e.g. via i18next-http-middleware's missingKeyHandler exposed to untrusted input), is vulnerable to prototype pollution via crafted missing-key strings.

Affected: < 2.6.6
Fixed in: 2.6.6
Weakness: CWE-1321
Published: 2026-06-25
Source: github

GHSA NVD MITRE reference reference

// dependencies

0 direct

// ai model usage

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

Checked 2026-09-22 at 00:47 UTC. The most recent advisory here was published 2026-06-25. Updated continuously from NVD, GHSA, OSV and CNA feeds.

Is i18next-fs-backend safe? npm package security report | CyberXYZ