Cross-site scripting in NAVER Whale browser
Priority MEDIUM 43CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
Whale browser before 3.26.244.21 allows an attacker to execute malicious JavaScript due to improper sanitization when processing a built-in extension.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0037 31st percentileScored 2026-11-07
Fix Fixed NAVER Whale browser (NAVER): 3.26.244.21
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA NAVER Whale browser (NAVER) Fixed in 3.26.244.21
Timeline
- 2026-10-02 Threatist record created from CVE-2024-40618
- 2026-10-03 Alias added: GHSA-4v7h-33pf-w9h6
References
Advisory 1
More NAVER vulnerabilities
- TI-2026-84161 billboard.js allows XSS via unsanitized series ids in legend templates CVSS 3.1MEDIUM 6.1
- 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
Sources
- CVE-2024-40618 · CVE Program
- CVE-2024-40618 · NVD
- FIRST EPSS
- GHSA-4v7h-33pf-w9h6 · GitHub Advisory Database · CC BY 4.0
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