{
  "cvss": 0.0,
  "datePublished": "2023-12-01T00:00:00Z",
  "dateUpdated": "2023-12-01T00:00:00Z",
  "description": "Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, when configured to use authentication (-Dnacos.core.auth.enabled=true) Nacos uses the AuthFilter servlet filter to enforce authentication. This filter has a backdoor that enables Nacos servers to bypass this filter and therefore skip authentication checks. This mechanism relies on the user-agent HTTP header so it can be easily spoofed. This issue may allow any user to carry out any administrative tasks on the Nacos server.",
  "dueDate": "",
  "id": "CVE-2021-29441",
  "kev_catalogs": [
    "vulncheck"
  ],
  "knownRansomwareCampaignUse": "Known",
  "product": "nacos",
  "requiredAction": "Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.",
  "severity": "CRITICAL",
  "source": "vulncheck_kev",
  "title": "alibaba nacos Authentication Bypass by Spoofing",
  "vendor": "alibaba"
}