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TI-2026-84161 Aliases CVE-2026-120988GHSA-qwgf-vfr8-c8w3

billboard.js allows XSS via unsanitized series ids in legend templates

Priority MEDIUM 60CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

billboard.js before 4.1.3 has improper sanitization of series ids during legend template rendering (CWE-79). An attacker can inject and run malicious JavaScript in the page. The attack requires user interaction and changes the scope, so the script runs in the context of the victim's browser session.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

billboard.js before 4.1.3 allows an attacker to execute malicious JavaScript due to improper sanitization of series ids during legend template rendering.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00155 4th percentileScored 2026-11-07
Fix Fixed billboard.js (NAVER): 4.1.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NAVERbillboard.js—4.1.3Patch availableCNA
  • billboard.js VendorNAVER Affected — Fixed in 4.1.3 Patch available CNA

Remediation

Upgrade NAVER billboard.js to version 4.1.3 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA billboard.js (NAVER) Fixed in 4.1.3

Timeline

  1. 2026-11-03 Threatist record created from CVE-2026-120988
  2. 2026-11-03 Alias added: GHSA-qwgf-vfr8-c8w3
  3. 2026-11-03 CVSS score added · CISA ADP
  4. 2026-11-03 CISA SSVC decision points changed
  5. 2026-11-03 Priority changed: LOW → MEDIUM

References

Advisory 1

Other 1

  • TI-2026-19139 Server-side request forgery in NAVER lucy-xss-filter CVSS 3.1MEDIUM 6.1
  • TI-2024-18782 Missing authorization in NAVER nGrinder CVSS 3.1MEDIUM 5.4
  • TI-2025-31281 Prototype pollution in NAVER billboard.js CVSS 3.1CRITICAL 9.8
  • TI-2024-18778 Deserialization of untrusted data in NAVER nGrinder CVSS 3.1CRITICAL 9.8
  • TI-2024-18777 Deserialization of untrusted data in NAVER nGrinder CVSS 3.1CRITICAL 9.8
  • TI-2025-38798 Whale Browser before 4.33.325.17 allows an attacker to escape the iframe sandbox in a dual-tab environment. CVSS 3.1CRITICAL 9.8
See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences