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CVE-2026-45819

Quick assessment

Affected
web-platform-dx baseline-browser-mapping
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

W3C WebDX Community Group baseline-browser-mapping是W3C WebDX Community Group组织的一款浏览器兼容性数据映射工具。 W3C WebDX Community Group baseline-browser-mapping 2.11.0版本之前的2.x版本存在安全漏洞，该漏洞源于对无效或冲突的输入参数处理不当，调用process.exit()而非抛出异常，可导致进程立即终止，造成拒绝服务。

CVSS 6.6 · Medium EPSS 0.37% · P31

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
web-platform-dx baseline-browser-mapping 2.0.0< 2.11.0 affected
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I. Basic Information for CVE-2026-45819

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
baseline-browser-mapping 2.x before 2.11.0 calls process.exit() instead of throwing on invalid or conflicting input parameters, and can trigger immediate process termination, causing denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
控制流范围控制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
W3C WebDX Community Group baseline-browser-mapping 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
W3C WebDX Community Group baseline-browser-mapping是W3C WebDX Community Group组织的一款浏览器兼容性数据映射工具。 W3C WebDX Community Group baseline-browser-mapping 2.11.0版本之前的2.x版本存在安全漏洞，该漏洞源于对无效或冲突的输入参数处理不当，调用process.exit()而非抛出异常，可导致进程立即终止，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
web-platform-dx baseline-browser-mapping 2.0.0 ~ 2.11.0 -

II. Public POCs for CVE-2026-45819

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III. Intelligence Information for CVE-2026-45819

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IV. Related Vulnerabilities

Same weakness: CWE-705

V. Comments for CVE-2026-45819

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