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

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

6.1MediumCISA-ADP
Exploited
Proof of concept public, per CISA
Fix
No fix listed
Who is exposed
Not reported
33Pcve.now Index 33 of 100 · methodology v3 · provisional
  • Exploitation15/40CISA rates a proof of concept as public
  • Exposure7/25Reachable over the network without a login · Data gap: No advisory context yet
  • Reach?/20Reach: unknown (data gap). No tracked technology or package matched
  • Severity6.1/10CVSS 6.1
  • No patch5/5No patch listed yet

What would change the score

  • Would score about 73 if added to CISA KEV
  • Would score about 68 if CISA's SSVC rates exploitation active
  • Would score about 48 if advisories confirm default setups are exposed

CVE-2026-120988 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.1 (medium) and affects billboard.js; no fixed version is listed yet.

Published
Last modified
Published
Not listed in CISA KEV
0.16% · 5th percentile
33/100 · provisional
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

billboard.js, a JavaScript charting library, is affected by this vulnerability, which could allow an attacker to run malicious scripts in a user's browser. The flaw stems from insufficient sanitization of series IDs when the chart legend is rendered.

Read the original description

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

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  4. Record last updated

Affected versions

  • NAVER billboard.js

    Version range not reported

Evidence 2

  1. Advisory
  2. Advisory

Corrections

None so far.

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