---
title: "CVE-2025-49223: billboard.js allows prototype pollution via the function generate"
url: https://erroneo.us/security/cve/CVE-2025-49223/
description: "CVE-2025-49223 (billboard.js (npm)): billboard.js before 3.15.1 was discovered to contain a prototype pollution via the function generate, which could allow…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-06-04
date_modified: 2025-07-29
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-49223"
kev: false
cvss: 9.8
epss: 0.0084
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-49223: billboard.js allows prototype pollution via the function generate

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.8% , percentile 57: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 57% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes billboard.js (npm) < 3.15.1, fixed in 3.15.1 . Check your lockfile, including transitive dependencies.

## What it is

billboard.js before 3.15.1 was discovered to contain a prototype pollution via the function generate, which could allow attackers to execute arbitrary code or cause a Denial of Service (DoS) via injecting arbitrary properties.

## Affected packages

- npm `billboard.js` < 3.15.1 → fixed: 3.15.1

## Affected products (CVE record)

- NAVER billboard.js: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.84% probability of exploitation activity in the next 30 days; percentile 57.

## Sources

- [NAVER Security Advisory](https://cve.naver.com/detail/cve-2025-49223.html)
- [GitHub Advisory GHSA-65p9-j6pg-72hj](https://github.com/advisories/GHSA-65p9-j6pg-72hj)
- [CVE.org record CVE-2025-49223](https://www.cve.org/CVERecord?id=CVE-2025-49223)
- [NVD entry CVE-2025-49223](https://nvd.nist.gov/vuln/detail/CVE-2025-49223)
- [github.com](https://github.com/naver/billboard.js/commit/82ea7ac4f5720d6a7f0c2fa5a5dad51a549667bb)
- [github.com](https://github.com/louay-075/CVE-2025-49223-BillboardJS-PoC)
- [github.com](https://github.com/naver/billboard.js/blob/938f263feca453fba5a4dc48d86b32cc5b509443/src/core.ts#L95)

---
Source page: https://erroneo.us/security/cve/CVE-2025-49223/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt