Prototype Pollution in Naver Billboard.js
CVE-2025-49223
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.
Vulnerability class: Prototype Pollution
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.001
Affected products
- Naver Billboard.js — versions 3.15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve.naver.com/detail/cve-2025-49223.html (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-49223?
- CVE-2025-49223 is a critical-severity vulnerability in Naver Billboard.js, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.8/10. Published 2025-06-04.
- How severe is CVE-2025-49223?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2025-49223 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.